Crankshaft Sensor? (Question)

  • A crankshaft sensor is composed of two parts—the rotating part and the static part. The rotating part is a toothed disc or wheel that rotates with the engine cam. The static part is the crankshaft sensor itself. There is also a crankshaft sensor equipped with LED lights and gets its reading as the LED light pass through the slots of a disc

What happens when a crankshaft sensor goes bad?

A failing crankshaft position sensor cannot provide the right information about piston positioning in the engine, causing a cylinder to misfire. This could also occur from faulty spark plug timing, but if the spark plug checks out, then the crankshaft sensor is likely the source.

What are the signs of a bad crankshaft sensor?

Symptoms of a Bad Crankshaft Position Sensor

  • Your Check Engine Light is Blinking.
  • It’s Difficult to Get Your Vehicle to Start.
  • Your Vehicle is Stalling and/or Backfiring.
  • The Engine is Making Your Vehicle Vibrate.

How much does it cost to replace a crankshaft sensor?

The average cost for a Crankshaft Position Sensor Replacement is between $172 and $219 but can vary from car to car.

Can a bad crankshaft sensor cause no start?

A bad Crankshaft Position sensor is a common cause of no starts. The signal from this sensor goes to the PCM or ignition module that switches the ignition coil(s) on and off. If you have an RPM signal, a bad ignition module or PCM may not be switching the coil(s) on and off.

Can you drive with bad crankshaft sensor?

Once the position sensor becomes compromised or if you have symptoms of a problematic crankshaft that you can’t ignore, do not drive your vehicle. If the problems are more severe, driving can cause substantial engine damage that could cost you a lot more to repair.

How long does it take to replace a crankshaft sensor?

The labor to replace the sensor is just under 1.5 hours according to my labor guide and the part is approx $50.

What causes crankshaft damage?

INSTALLATION FAULTS AND WEAR ARE THE MOST COMMON CAUSES OF DAMAGE TO THE CRANKSHAFT AND CRANKSHAFT BEARINGS. Softening of the bearing journals due to previous bearing damage or improper modification work, e.g. excessive regrinding. Incorrect tightening torques and/or old bearing cap screws were used.

Will a car start without crankshaft sensor?

The crankshaft position sensor is the most important of all engine management sensors, and the engine will absolutely not run without it. In your case, a magnetic crankshaft positioning sensor is used.

What does a crank sensor do in a car?

The Crankshaft Position Sensor is attached to the engine block facing the timing rotor on the engine crankshaft. The sensor detects signals used by the engine ECU to calculate the crankshaft position, and the engine rotational speed.

Where is the crankshaft position sensor located?

The sensor is at either the front or the back of the crankshaft, so it’s usually located either on the transmission bellhousing or behind the crankshaft pulley. There should be a small air gap, usually about a millimeter or two, between the sensor and the reluctor.

What does it mean if your car won’t start but the lights come on?

Broken or Damaged Ignition If your headlights can turn on, but your car won’t crank, that means that your battery is charged, but either the starter or ignition is the problem. If the starter or ignition is the problem, a starter engine can be jumped by using a charged battery.

Does crank sensor control fuel pump?

Technically the crank sensor does indirectly control the fuel pump on a lot of vehicles, when the ignition is switched on the pump runs for a couple of seconds to pressurise the system, it then stops and will only start to run again when the engine starts to rotate, this rotation is sensed by the crank angle sensor

Crankshaft Position Sensor – Best Engine Crankshaft Sensor Prices

All of the components in a car’s engine must work in unison in order for it to function properly, and an engine management system ensures that everything is properly monitored. A crankshaft position sensor is critical to the operation of an engine; without it, the engine would not be able to start at all. It is commonly referred to as a crank sensor because it monitors the speed at which the crankshaft is turning and transmits that information to the onboard computer.

How Do Crankshaft Position Sensors Work?

There is a crankshaft position sensor on every internal combustion engine, however the placement of the sensor varies from one engine to another. On some vehicles, the crankshaft position sensor is located at the front of the vehicle, adjacent to the primary crankshaft pulley, however on others, the sensor is located on the transmission bell housing or aimed into the cylinder block. In order to function, a crankshaft position sensor must have two parts: a hard plastic enclosure and a sensor head, which is where the magic takes place.

They provide the same job, but they do it via the use of distinct technology.

In proximity to the sensor head is a reluctor ring that has a reference point in it, such as a missing tooth, that corresponds to the top-dead center on cylinder1.

A pulsed voltage signal is produced when a rotational sensor detects the reference point and detects the rotation of the ring.

Signs of a Bad Crankshaft Position Sensor

If the crankshaft position sensor is not functioning properly, there will almost likely be indications that something is amiss and that you should attend to it right away. Because it is critical for the powertrain control module’s timing reference, if the data is absent or wrong, the engine will not operate properly. It is possible that you will have acceleration difficulties, a rough-running engine, or low fuel efficiency as a result of the computer’s inability to change the timing. It is possible that the engine will stall or that it will not even start at all.

The presence of DTCs between P0335 and P0338 indicates a problem with the crankshaft position sensor, albeit a more complete examination is necessary to determine whether this is the underlying problem.

Replacing a Crankshaft Position Sensor

You won’t normally need special tools or expensive equipment to replace the crank sensor, but you may want it for the diagnostics and testing that will take place before the replacement. Once you’ve determined that it’s the source of the problem, replacing it is as simple as replacing most other vehicle sensors. The cost of the item varies from around $40 to $150 or more, depending on the vehicle. When you use the filter above to choose the year, make, model, and engine size of your car, you can locate the proper crankshaft sensor for your vehicle at AutoZone.

In addition, an AutoZoner at one of our shops near you can assist you in locating the appropriate part. Get your parts as soon as possible with our Free In-Store or Curbside Pickup, or choose Free Next-Day Delivery to have them sent directly to your door.

Symptoms of a Bad Crankshaft Postion Sensor

One of the most crucial components of your car is the engine, which includes components such as the crankshaft position sensor that are essential to keeping your engine running smoothly. The crankshaft position sensor is responsible for monitoring the engine’s various moving elements, which include the crankshaft, the engine’s valves, and the engine’s pistons, among others. Schedule Service”>Schedule Service”>Schedule Service Drivers in Philadelphia, Doylestown, and Mechanicsburg may quickly identify problems with this section of their engine before they cause harm by following the instructions in this tutorial.

  • Your Check Engine light is on. The light on your dashboard is blinking
  • It’s difficult to start your vehicle
  • Stalling and/or backfiring are occurring in your vehicle. Your vehicle is vibrating as a result of the engine.

Check Engine Light is Blinking

One of the most prevalent signs of a damaged crankshaft position sensor is the presence of the check engine light on the dash of your vehicle. After all, the function of a light is to alert you when something is wrong beneath the hood so that you may have it repaired as soon as possible. A variety of factors might cause your check engine light to illuminate, so whether or not it is due to a problem with the crankshaft position sensor, you should get your engine checked out by a professional as soon as the light illuminates.

Difficult to Get Your Vehicle to Start

The fact that you are having difficulty starting your car is yet another major red sign. Every time you attempt to start your car, the crankshaft position sensor instantly begins monitoring the position and speed of the crankshaft. Alternatively, if this sensor is experiencing a difficulty, it may be unable to initiate this operation, and the engine will fail to start as a result.

Vehicle is Stalling and/or Backfiring

A issue with your crankshaft position sensor, which is similar to the symptom described above, might cause your car to stall and/or backfire. Because the disruption of the crankshaft signal might result in the engine being shut down, stalling is more prevalent than backfiring in automobiles. In addition to this, depending on how long the signal is out and how fast you are going at the time, backfiring might also occur as a result of this situation.

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Engine is Making Your Vehicle Vibrate

One last indicator of a failing crankshaft position sensor is audible vibrations emanating from the engine compartment. Some people believe that when the engine is running, there is always a slight vibration emanating from beneath the hood. It’s possible that a malfunction with the crankshaft position sensor is the cause of a significant rise in this vibration; however, this is unlikely. When this vibration occurs, the vehicle’s fuel efficiency and power both suffer a significant decrease. It will take significantly more energy and petrol to get you where you need to go.

Need Some Assistance with Your Crankshaft Position Sensor?

This guide to the most typical symptoms of a malfunctioning crankshaft position sensor, provided by Fred Beans, is intended to provide you with all the knowledge you need to troubleshoot any future difficulties you may encounter.

In the meantime, if any of these signs or symptoms seem similar, it may be time to consult a medical expert. Drivers in Philadelphia, Doylestown, and Mechanicsburg should give us a call now to arrange an appointment at our handy on-site servicing center!

Crankshaft position sensor – Wikipedia

This articleneeds attention from an expert in Automobiles. The specific problem is:This article needs editing by an automotive engineer.WikiProject Automobilesmay be able to help recruit an expert.(January 2016)

A typical inductive crankshaft position sensor is shown in Figure 1. In an internal combustion engine, both petrol and diesel, a crank sensor is an electrical device that monitors the location or rotational speed of the crankshaft. It is utilized by engine management systems to control the fuel injection or the timing of the ignition system, as well as other engine characteristics. Prior to the invention of electronic crank sensors, the distributor had to be manually adjusted to get the proper timing on petrol engines, which was time-consuming.

This procedure is also used to “synchronize” a four-stroke engine when it is first started, allowing the engine’s management system to know when to pump gasoline into the combustion chamber.

The primary crank pulley, the flywheel, the camshaft, and the crankshaft itself are all common mounting places for this component.

A malfunctioning crank sensor position signal will cause an engine to not start or to cut out while running, as fuel injection (in diesel engines) or spark ignition (in gasoline engines) is normally timed from the position signal received from the crank sensor.

Types of sensors

You may choose from numerous different types of sensors, including theinductive sensor, theHall-effect sensor, the magnetoresistive sensor, and the optical sensor. Inductive sensors are the simplest type of sensor to create and are typically used as completely passive devices. While inductive sensors can detect changing magnetic fields, Hall effect and magnetoresistive sensors have the benefit of being able to detect static (non-changing) magnetic fields. Although optical sensors do not have a high level of resistance to fouling, they are capable of providing the most exact edge detection.

In comparison to the previous approach, this one is far more accurate, and it allows the computer to calculate, within a few degrees, the exact location of the crankshaft (and hence all linked components) at any given point in time.


The crankshaft position sensor has the functional purpose of determining the location and/or rotational speed (RPM) of the crankshaft. When an engine control unit receives information from a sensor, it uses that information to adjust factors such as the timing of the ignition and fuel injection. In a diesel engine, the sensor will be in charge of controlling the fuel injection. The sensor output may also be correlated with other sensor data, such as the cam position, in order to determine the current combustion cycle, which is particularly crucial when starting a four-stroke engine for the first time.

  • One possible reason of crankshaft position sensor failure is prolonged exposure to high temperatures.
  • Many current crankshaft sensors are hermetically sealed equipment, which means they will not be harmed by water or other liquids.
  • A faulty crank position sensor can impair the way the engine starts and accelerates, as well as the way the engine performs under load.
  • Acceleration may be sluggish, and strange shaking at engine idle may be experienced.
  • The first indicator of a failing crankshaft sensor is generally the unwillingness of the engine to start while it is hot, but the engine will start again once the engine has cooled down.

An example is the “three-wire” inductive crank sensor, in which the third wire is essentially merely a co-axial shield surrounding the two primary sensor wires, preventing them from picking up stray electrical pulses from elsewhere in the vehicle’s engine bay, as is the case with certain designs.


Crank sensors are also used on bicycles to monitor the position of the crankset, which is often for the purpose of reading the cycle computer’s sequence. In most cases, these are reed switches that are installed on the bicycle frame, with a matching magnet attached to one of the pedals or crankset arms.


The technique of GMR (giant magnetoresistance) is also employed for the sensing of crankshafts, camshafts, and rotors. Mitsubishi is the first company to apply this technology in an automobile application setting, according to Mitsubishi.

External links

  • Input position sensors for the crankshaft and camshaft, as well as a crank position sensor

Camshaft and Crankshaft Position Sensors – Spectra Premium

Spectra Part Number Most Popular Applications North American VIO
S10362 2013 Hyundai Elantra 775,356
S10342 2014 Ford F-150 603,818
S10374 2012 Honda Civic 504,000
S10224 2012 Toyota Camry 503,126
S10315 2010 Toyota Corolla 462,005

Common CamshaftCrankshat Sensor Failure Symptoms

  • The check engine light turns on
  • The engine will not start
  • The vehicle will perform poorly
  • The vehicle will stall
  • The vehicle will consume more gasoline
  • The vehicle will accelerate inconsistently
  • The vehicle will experience sudden reductions in RPM

Common Causes of Failure

Any sensor will eventually fail, whether as a result of an accident, a power failure, or natural wear and tear. An engine that has suffered from a malfunctioning crankshaft or camshaft position sensor may cut out, die while driving, or refuse to start. Engine failure due to a defective sensor might be fatal in the worst case scenario.

Crankshaft position sensor: how it works, symptoms, problems, testing

The most recent update was made on December 4, 2018. Sensor for the crankshaft position in a Ford (CKP) The engine crankshaft position sensor monitors the engine crankshaft’s rotational speed (in revolutions per minute) as well as its precise location. The engine would not start if it did not include a crankshaft position sensor. Some automobiles have the sensor located near to the primary pulley (harmonic balancer), such as the Ford seen in the photograph. In other automobiles, the sensor might be mounted in the transmission bell housing or in the engine cylinder block, as seen in the photo to the right.

How the crankshaft position sensor works

The crankshaft position sensor is installed in such a way that the teeth on the reluctor ring attached to the crankshaft pass near to the tip of the sensor. One or more teeth on the reluctor ring are missing, which allows the engine computer (PCM) to use them as a reference point to determine the position of the crankshaft. Located in the cylinder block of this General Motors engine, the crankshaft position sensor measures rotational speed. In response to the rotation of the crankshaft, the sensor generates a pulsed voltage signal, where each pulse corresponds to one of the teeth on the reluctor ring.

In this vehicle, the thereluctor ring has two missing teeth, as can be seen on the graph, which indicates that it is a custom-made vehicle.

The signal from the crankshaft position is also utilized to check if any of the cylinders are misfiring, which is detected by monitoring the crankshaft position.

If the sensor’s signal is not received, there will be no spark and the fuel injectors will not work.

Hall-effect sensors are used in modern automobiles. A two-pin connection is used to connect a pick-up coil type sensor to a computer. A three-pin connection is used to connect the Hall-effect sensor to the rest of the system (reference voltage, ground and signal).

Symptoms of a failing crankshaft position sensor

A faulty sensor might create intermittent difficulties, such as the automobile cutting off or stalling at odd intervals, but then restarting without issue. In damp conditions, the engine may have difficulty starting, but it will restart without issue after that. It is possible that the RPM gauge will behave abnormally from time to time. Occasionally, a faulty sensor might result in a prolonged cranking time before the engine would start. If the sensor is not functioning properly, the engine will crank but will not start.

Crankshaft position sensor problems

Sensor for the position of the crankshaft The P0335 – Crankshaft Position Sensor “A” Circuit code is the most often encountered OBDII code relating to the crankshaft position sensor. In some vehicles (e.g., Mercedes-Benz, Nissan, Chevrolet, Hyundai, and Kia), this code is frequently caused by a broken sensor, however there may be other causes, such as wiring or connection difficulties, a damaged reluctor ring, or other factors that contribute to this code. Intermittent stalling can also be caused by an issue with the wire harness connecting the crankshaft position sensor in some vehicles.

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The Chrysler advisory 09-004-07 details an issue that can occur with certain 2005-2007 Jeep and Chrysler vehicles when the crankshaft position sensor fails, resulting in a no-start condition.

Similarly, another Chrysler advisory, Chrysler Bulletin 18-024-10, for certain 2008-2010 Chrysler Dodge and Jeep cars, notes a problem with the code P0339 – Crankshaft Position Sensor Intermittent, which can be caused by an inappropriate gap or a defective flexplate.

When the engine is heated, stalling is one of the signs that might occur.

How the crankshaft position sensor is tested

When there is a reasonable suspicion that a crankshaft position sensor is to blame for a problem, or when a related issue code is present, the sensor must be visually inspected for cracks, loose or corroded connector pins, or other evident damage before any further action is taken. Additionally, the appropriate spacing between the tip of the sensor and the reluctor ring is quite critical. The service handbook contains information on how to perform the proper testing method. We’ve included some links at the bottom of this page that will allow you to view a service manual for a monthly membership charge.

  1. It measured 285.6 ohms in resistance, which is within specs, for this crankshaft position sensor from a 2008 Ford Escape.
  2. As you can see in the photo, we measured 285.6 ohms, which is within specs.
  3. It is necessary to validate the reference voltage (usually +5V) and the ground signal for Hall-type sensors before using them.
  4. It is possible that the sensor has an intermittent problem that is not visible throughout the testing process.
  5. If you use an OBDII scan tool, you’ll see the signal from the crankshaft position sensor displayed as “Engine RPM.” A scan tool may be used to examine the location of the crankshaft position sensor.
  6. When can anything like this be beneficial?

If the sensor is functioning properly, the RPM signal should gradually decrease or increase. as shown in this photograph We tested the crankshaft position sensor in this automobile using an OBDII “Torque” program on a mobile phone to determine its accuracy.

Crankshaft sensor replacement

The cost of replacing a crankshaft position sensor is not prohibitively high. The part ranges in price from $35 to $115, including labor fees ranging from $55 to $130. It is preferable to utilize an original equipment manufacturer component. In most autos, replacing the sensor is a straightforward process, however corrosion may make it harder to remove the sensor in some cases. More information may be found in the followingYoutube videos. When changing a crankshaft position sensor, it is critical to ensure that the space between the sensor and the reluctor ring teeth is the right distance.

Crankshaft Position Sensor Replacement – Everything You Need to Know

The crankshaft position sensor watches the rotation of the crankshaft, and is especially designed to detect when the number one piston hits top dead center (TDC) in the cylinder (see illustration). The majority of crankshaft sensors are positioned immediately above a notched ring on the crankshaft or just above the flywheel on most vehicles. These sensors make use of a magnet to generate or change an alternating current electrical signal, which is then utilized in conjunction with a camshaft position sensor to identify whether a position is approaching top dead center (TDC) on a compression stroke.

What are the symptoms of a faulty crankshaft position sensor?

To put it another way, the automobile will not start. There will be no spark and the engine will not start until the on-board computer receives a signal from the crankshaft sensor, which will take several seconds. More importantly, when an irregular signal is received by the on-board computer, internal logic will interpret this as a mechanical fault, and it will automatically turn off the engine to prevent any more harm. It is possible for the engine to stall for no apparent cause. Among the leading causes of sensor failure are high temperatures and oxidation (rust in particular).

What is the severity of a faulty crankshaft position sensor?

It is possible that the failure of a crankshaft position sensor may leave you stuck on the side of the road, waiting for a tow vehicle. If the sensor is allowed to cool down, the automobile may be able to restart and run for a limited length of time in some cases. Find a reputable technician, preferably one that specializes in engine performance, and schedule an appointment before proceeding with the turn and pray method. Plan on leaving the car in the position for many days, as some sensors may take longer to respond than others, depending on the particular location.

What is the typical cost for Crankshaft Position Sensor Replacement?

  • Estimated part(s) costs between $50 and $100
  • Estimated labor costs between $600 and $700.

The overall cost is estimated to be between $650 and $800. This will be a fix between two extremes – either extremely inexpensive or extremely costly. Depending on the manufacturer, the sensor will range in price from $50 to $100 dollars. Although installation costs can vary greatly depending on the vehicle, they can sometimes reach upwards of $600 to $700 or more in some situations. Many sensors may be mounted on the engine or inserted through a hole in the engine near the crankshaft pulley, and they are quite simple to remove and replace.

In order to gain access to the sensor, it will be necessary to remove these components.

Once again, cost will vary depending on your region as well as the type and model of your car.

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6 Symptoms of a Bad Crankshaft Position Sensor & Replacement Cost in 2022

The most recent update was made on September 7, 2021. One of the most crucial sensors in the engine, known as the “crankshaft position sensor,” will be discussed in detail in this article. Following that, you’ll be able to comprehend its fundamental purpose, operating principle, failure symptoms, and replacement cost for this sensor. Are you looking for a reliable online repair manual? The top five choices may be found by clicking here.

How a Crankshaft Position Sensor Works

The crankshaft provides rotational energy to the internal combustion engine, which is a reciprocating engine. Reciprocal energy (also known as linear energy) is converted into rotational energy by the crankshaft, which is the primary function of the engine. The latter will then transmit power to the wheels of the drivetrain located beneath the car’s chassis. In this manner, the wheels may rotate forward, allowing the vehicle to go in the desired direction. The crankshaft position sensor, on the other hand, merely measures the rate at which the crankshaft is turning.

  • This information will be used to decide how the engine control unit will manage the timing of the fuel injection system and the ignition system in the vehicle.
  • The crankshaft position provides the engine control unit with all of the information it requires.
  • In order for the engine to function properly, the camshaft must activate the exhaust valves at the right periods.
  • All of this has a direct relationship to the operation of the crankshaft.
  • Additionally, it will be able to determine the state of the camshaft’s functioning by measuring the speed of the crankshaft in connection with its location.

Top 6 Bad Crankshaft Position Sensor Symptoms

For an internal combustion engine to operate properly, the crankshaft position sensor must be functioning. The engine control unit will not get accurate information regarding the location and speed of the crankshaft if this is not accomplished. This will result in a variety of issues with the engine’s operation as well as the driving performance of the vehicle. When these symptoms first appear, you will almost certainly identify them. The following are the top 6 signs and symptoms of a malfunctioning crankshaft position sensor.

1 – Engine Vibrations

Do you notice any vibrations coming from your vehicle’s engine? Crankshaft position sensors that are not functioning properly indicate that the engine control unit is unable to appropriately govern the crankshaft.

A significant amount of vibration will be generated by this process in your engine. As you grasp the steering wheel in your hands, you may even be able to feel the vibrations seeping into the wheel.

2 – Check Engine Light

In order for the engine control unit to communicate with the crankshaft position sensor, it must be constantly connected. If there is ever a problem with the sensor, the computer will get incorrect information about the speed of the crankshaft and its location as a result of the problem. This will result in engine functioning issues, which will result in the Check Engine warning light on the dashboard turning on and off repeatedly. In fact, this should be one of the first signs that the crankshaft position sensor is malfunctioning.

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P0016, P0017, and P1345 (Crankshaft/Camshaft Position Sensor Correlation) are related.

3 – Weak Engine Performance

Because of a malfunctioning crankshaft position sensor, your engine control unit will be unable to determine the proper position of the crankshaft or cylinders. Because of this, the control unit will be unable to maintain the operation and performance of the engine for an extended time period. During this period of time, there will be moments of hesitation each time you press the gas pedal a little bit more on the accelerator. It will occasionally not reply at all. This can be extremely dangerous on a route where you are required to travel at a quicker speed without hesitating.

4 – Trouble Starting Car

When there is an issue with the crankshaft position sensor, the engine control unit will be alerted of the situation. From the sensor, a specific malfunction code is sent to the computer, indicating that there is some sort of difficulty with the computer’s operation. In the event that you attempt to start your car while experiencing this problem, it will be more difficult to get the engine to turn over. Depending on how long the problem persists without being remedied, you may be unable to start your vehicle at all.

5 – Engine Stalling

It’s possible that you’ll be driving along one day and your engine will abruptly cease working. This is referred to as engine stalling, and it can occur rather frequently when the crankshaft position sensor is malfunctioning. If you do not repair this sensor as soon as possible, your engine will ultimately cease to function completely. Once this occurs, you will have no choice but to have your car towed to a repair so that the sensor can be replaced.

6 – Cylinder Misfiring

If the crankshaft position sensor fails, the engine control unit will be unable to communicate precise data about the piston position since the sensor will not be functioning. This frequently results in a misfire occurring within one or more of the chamber cylinders of the firearm. Sometimes a damaged spark plug can cause this as well, but if you are experiencing any of the other symptoms listed above, don’t discount out the chance of a bad crankshaft position sensor in your vehicle. Additionally, see:Oxygen Sensor: Fundamental Function, Failure Symptoms, and Replacement Cost

Crankshaft Position Sensor Replacement Cost

If you are experiencing at least two or more of the symptoms listed above, you most likely have a faulty crankshaft position sensor in your vehicle. The only way to know for sure is to take your car to a professional technician and have them analyze the problem for you, which will cost you nothing. Once it has been determined that the crankshaft position sensor is the source of the problem, you may proceed with having the sensor replaced. The cost of a new crankshaft position sensor ranges from $120 to $300 depending on the manufacturer.

The cost of the labor will range from $45 to $180 depending on the situation.

Finally, this will not be a prohibitively expensive replacement task to do. It is worthwhile to make the expenditure since you are ensuring the continued operation of your engine.

Crankshaft Sensors

With hundreds of crankshaft sensors in our inventory, we are able to provide full coverage for all makes and models, including Chrysler, Ford, General Motors, Honda, Mercedes-Benz, Nissan, Toyota, Volkswagen, and others. Our crankshaft position sensors are manufactured at our IATF 16949-certified plant in Reynosa, Mexico, to assure the highest level of quality.

Interested in learning more about this product category? Contact your local Standard rep.

We take each of our crank sensors to comprehensive end-of-line testing, which includes a 48- to 64-hour vibration test over three separate planes, in order to assure long-term reliability under difficult conditions. Watch the video above for a closer look at our crank sensors, which include high-quality components.

  • Precision connections to the harness are ensured by matching connectors and tin-plated brass terminals. Grommets and wire clips are pre-installed at the factory to ensure correct installation throughout the installation process. High-strength neodymium magnets guarantee that the ECM receives the right signal voltage. Protective sleeves keep wires from rubbing together and causing short circuits. Accuracy and operation are improved by using an integrated A/D converter and digital signal processing with a dynamically adaptable switch point.

Our Chamber Testing Cycles Between -40ºF to 257ºF

Our crankshaft position sensors are subjected to chamber testing in which the temperature ranges from -40 degrees Fahrenheit to 257 degrees Fahrenheit. We also submit each sensor to comprehensive end-of-line timing, pulse width, and signal amplitude testing to ensure that it meets our high standards.

What Our Testing Means for You

  • To guard against voltage fluctuations such as overvoltage and under voltage, as well as reverse voltage and short circuits
  • Maintain accuracy under extreme circumstances of heavy-duty shock, vibration, and high temperature

About Crank Sensors

Crank sensors (also known as crankshaft position sensors or crankshaft sensors) are located in the timing cover or on the side of the block with a cylindrical section pushed into the block and are responsible for setting ignition timing, supplying the RPM signal, and determining engine speed. Crank sensors can fail for a variety of reasons, including high heat, bad wire harnesses, and sensor motion.

Tech Tip: Replace Cam/Crank Sensors Together

  • Modern engines use variable valve timing (VVT) systems with numerous camshafts to comply with ever-increasing fuel economy restrictions. When it comes to sensors, a normal DOHC engine will include 2-4 camshaft sensors in addition to a crankshaft sensor. The failure of one sensor indicates that the other sensors are reaching the end of their service life as well
  • We recommend that you replace the cam and crank sensors simultaneously in order to ensure appropriate operation.

Crankshaft Sensor Installation – Dodge, Chrysler, Plymouth 2.7L

CARS.COM is a website dedicated to automobiles. The majority of automobile owners are unlikely to be aware that their vehicle is equipped with a crankshaft position sensor until the engine fails to start, fails to operate properly, or runs badly. Then, while the automobile is in the shop for repairs, they discover that they need to purchase a new one. If there was ever a time when your vehicle’s need for repair or replacement came at an inopportune time, this would be it. How Often Should I Replace My Accessory Drive Belt?

  • The crankshaft position sensor, which is normally positioned near or on the crankshaft, provides information to the engine computer about the engine’s speed.
  • Distributorless ignition systems, which are used on practically all engines, rely on these sensors for operation.
  • Stalling of the engine is another indication that may result in the check-engine light becoming illuminated.
  • In addition to failing due to excessive heat, these sensors can also stop operating due to defective electrical connections or wiring, which are also common causes of failure.
  • However, despite the fact that these sensors are not listed as routine maintenance items, they frequently fail without notice.
  • In some cases, the cost might vary based on the shop, engine, and age of the vehicle in issue.
  • Prior to doing the operation to repair or replace the sensor, a professional repair company would complete this procedure.
  • Editors and reviewers at are prohibited from accepting gifts or free vacations from automobile manufacturers, in accordance with the company’s long-standing ethical code.

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How they work – Denso

When installed on the engine block, the Crankshaft Position Sensor is aligned with the timing rotor on the crankshaft of the engine. The sensor detects signals that are utilized by the engine’s electronic control unit to compute the crankshaft position and the rotational speed of the engine. Crankshaft position sensors are available in two different configurations. As a point of reference, the MPU type is discussed here. The timing rotor has 34 teeth, which are spaced every 10° Crank Angle (CA), plus two missing teeth for Top Dead Center (TDC) detection, which are located around the outside diameter of the rotor.

These alternating current waves are transformed to rectangular waveforms by the waveform shaping circuit contained inside the engine ECU, and the resulting data is utilized to determine the crankshaft position, TDC, and rotational speed of the engine.

Camshaft Position Sensor

When the engine’s camshaft turns, the Camshaft Position Sensor detects it. It is situated near the cylinder head in such a way that the sensor is in opposition to the timing rotor that is linked to the engine camshaft. Using inputs from the camshaft position sensor, the engine ECU determines the camshaft angle and then conducts cylinder recognition on the basis of that information. Camshaft Position Sensors are available in two different configurations. As a point of reference, the MRE type is described here.

This occurs as a result of the rotation of the timing rotor.

The camshaft position sensor receives voltage from the engine ECU, and the change in the MRE resistance value is output as a change in the voltage.

The outputs of the MRE are subsequently transferred to the engine’s electronic control unit.

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