How to Reset Crankshaft Position Sensor for a No-Start: A Guide.


To reset crankshaft position sensor no start, disconnect the battery, remove the sensor and clean it before reinstallation. When your vehicle’s engine won’t start, it could be due to a fault in the crankshaft position sensor.

The crankshaft position sensor is responsible for regulating the fuel supply and ignition system in your engine. If it fails, it won’t send the correct signals to your car’s computer system, causing your car to stall. But before calling a mechanic to fix it, you can try a few things yourself.

One of them is resetting the crankshaft position sensor. This article provides an overview of how to reset the sensor to solve the problem.

How to Reset Crankshaft Position Sensor for a No-Start: A Guide.


Step-By-Step Guide To Resetting Crankshaft Position Sensor

Resetting the crankshaft position sensor can be a straightforward solution for a car that is unable to start. The crankshaft position sensor is an essential component of the engine’s electronic system. It detects the position of the crankshaft and communicates the data to the car’s computer.

If the sensor malfunctions or fails altogether, it can cause a range of problems, including a no-start situation. We’ll provide you with a step-by-step guide for resetting your car’s crankshaft position sensor.

Preparation: Gather Necessary Tools And Equipment

Before resetting your car’s crankshaft position sensor, you need to prepare the necessary tools and equipment. Here’s a list of items you’ll need:

  • A set of wrenches
  • Non-conductive gloves
  • Safety glasses
  • An obd scanner
  • A diagnostic manual (if your engine’s computer doesn’t generate codes)

Step 1: Locate The Sensor And Disconnect It

The first step in resetting the crankshaft position sensor is to locate it. The sensor is usually placed on the engine block near the crankshaft. Check your car’s manual if you’re having difficulty locating it. Once found:

  • Ensure that the engine is off.
  • Wear non-conductive gloves and safety glasses.
  • Use a wrench to disconnect the cable from the sensor itself. Please note that some sensors have a locking clip which must be released before you can remove the cable.

Step 2: Wait For A Few Minutes To Allow The System To Reset

Once you have disconnected the sensor, you need to wait for a few minutes (5-10 minutes should be enough time) for the engine control module to reset completely. Take this time to inspect the sensor for any damage or visible wear and tear.

Step 3: Reconnect The Sensor And Start The Engine

After waiting for the system to reset, reattach the cable to the crankshaft position sensor. Make sure the clip or lock is securely in place. Once reconnected, start the engine to check if the sensor has reset. If the engine starts up, congratulations! Your crankshaft position sensor reset was successful.

If not, proceed to step 4.

Step 4: Test Drive To Confirm That The Sensor Has Been Successfully Reset

The final step in resetting the crankshaft position sensor is to test drive the vehicle. Take the car for a short drive to ensure that everything is working correctly. If you experience any issues, pull over immediately and consult your diagnostic manual or contact a certified mechanic.

Resetting the crankshaft position sensor can be a quick and easy solution for a no-start situation. This guide’s steps will help you to complete the reset correctly, but ensure that you follow all the steps carefully to avoid any harm to yourself or damage to your car.

Don’t forget always to take precautions and wear the necessary safety gear when working on your car’s electronic system.

Troubleshooting Common Issues While Resetting Crankshaft Position Sensor

Resetting the crankshaft position sensor can come with a number of challenges. It’s essential that you identify them and know how to troubleshoot them to ensure the safety and effectiveness of your vehicle. In this guide, we will cover the common issues that you may face while resetting the crankshaft position sensor.

Let’s get started!

Issue 1: Unable To Locate The Sensor

If you cannot locate the sensor, it may be because it’s in a difficult or hard-to-reach location. Fear not, here are some tips to help you locate it:

  • Refer to your vehicle’s manual to find the exact location of the sensor
  • The sensor is usually found near the engine block or the transmission housing
  • Look for a cylindrical-shaped metal component with wiring attached
  • Use a flashlight to help locate the sensor if it’s not visible
  • If you still can’t locate the sensor, consult a mechanic or an expert.

Issue 2: Sensor Still Faulty Even After Resetting

If your crankshaft position sensor is still giving you issues even after resetting it, it’s time to do some further troubleshooting. Here are some possible reasons for a faulty sensor:

  • The sensor is damaged and needs to be replaced
  • Loose or corroded wiring connections
  • Issues with the timing belt or chain
  • Problems with the engine control module (ecm)

When troubleshooting these issues, it’s essential to do a thorough check of your vehicle. Once you’ve identified the root cause, you can address the problem appropriately.

Resetting the crankshaft position sensor often comes with some challenges. However, with the right knowledge and expertise, you can easily troubleshoot common issues and ensure the smooth functioning of your vehicle. Make sure to reference the tips in this guide and seek professional help when necessary.

Frequently Asked Questions

What Is The Role Of A Crankshaft Position Sensor?

The crankshaft position sensor is an essential component of a car’s ignition system. Its primary function is to monitor the rotational speed and position of the crankshaft, so the engine can start correctly. Some of its key roles include:

  • Sending signals to the car’s onboard computer that measure the engine’s rpms (revolutions per minute)
  • Providing data needed to control the ignition timing and fuel injection system
  • Identifying the position of each cylinder in the engine’s rotation

How Does A Crankshaft Position Sensor Work?

The crankshaft position sensor works in tandem with the camshaft position sensor to help the engine start promptly. Here’s how the crankshaft sensor works:

  • It monitors the position and speed of the crankshaft via a magnetic sensor that measures the teeth on the crankshaft’s gear wheel
  • The sensor converts the signals it picks up into voltage readings, and sends these back to the car’s computer
  • The computer then uses this information to calculate the ignition timing and fuel injection system required to start the engine.

Is It Possible To Drive A Car With A Faulty Crankshaft Position Sensor?

It’s not advisable to drive your car with a faulty crankshaft position sensor. If the sensor fails, the engine’s fuel injection system and ignition timing may fail, causing the car to stall, misfire, or refuse to start entirely. Here are some signs of a faulty sensor to watch out for:

  • Your car may experience sudden engine stalls while you’re driving
  • The engine may fail to start altogether, making a clicking sound
  • The check engine light may turn.

Can Resetting The Crankshaft Position Sensor Fix The No-Start Issue?

Resetting the crankshaft position sensor may help to fix a no-start problem occasionally. Here are a few steps you can take to reset the sensor:

  • Remove the negative battery cable from the battery
  • Wait at least 15 minutes before reconnecting the cable
  • Reconnect the negative battery cable, then turn the car on. The sensor should reset itself.

However, resetting the crankshaft position sensor is sometimes only a temporary solution. If the fault persists, it’s best to get the car checked by a mechanic, who can diagnose and fix the underlying problem.

Frequently Asked Questions For How To Reset Crankshaft Position Sensor No Start

Can A Bad Crankshaft Position Sensor Cause A No-Start Condition?

Yes, a bad crankshaft position sensor can cause a no-start condition in your vehicle. It is because the crankshaft position sensor is responsible for providing the engine’s computer with information about the crankshaft’s position and speed. This information is essential for starting the engine.

How Do I Know If My Crankshaft Position Sensor Is Bad?

You will know if your crankshaft position sensor is bad if you notice your vehicle has a hard time starting, stalls or hesitates while accelerating. Also, you may find that your fuel economy has decreased. A diagnostic test can confirm if your cps is faulty.

How Much Does It Cost To Replace A Crankshaft Position Sensor?

The average cost to replace a crankshaft position sensor ranges from $150 to $300, including parts and labor. It depends on the make and model of your vehicle, and the location of the sensor. However, it is always best to check with a trusted mechanic for an accurate quote.

Can You Reset A Crankshaft Position Sensor?

No, you cannot reset a crankshaft position sensor. If it is defective or damaged, then it needs to be replaced. Resetting it won’t solve the problem. Only a certified mechanic can replace the faulty cps with a new one.

How Long Does It Take To Replace A Crankshaft Position Sensor?

The replacement process usually takes between 1 to 2 hours, depending on the make and model of your vehicle, and the location of the sensor. It can take longer if there are other related issues to address. However, getting it fixed by a professional certified mechanic is advisable.


After going through this guide on how to reset crankshaft position sensor no start, it’s evident that this is a task that requires an experienced individual to handle. Although it might seem like a simple task to do, it requires technical knowledge and understanding of the car parts to avoid causing severe damage.

In addition, following the manufacturer’s instructions and getting the right tools and equipment plays a crucial role in ensuring that the reset procedure is done correctly. Keeping your engine in good condition is essential to ensure that your car performs at its best and help avoid unexpected breakdowns in the future.

Don’t hesitate to seek professional assistance if you encounter any problems during the reset process. Overall, understanding how to reset your crankshaft position sensor is vital and can save you the hassle and high cost of getting your car to an auto shop.

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