What to Do After Replacing Crankshaft Sensor: Essential Steps

When you replace the crankshaft position sensor in your vehicle, you may encounter issues such as the check engine light turning on, trouble codes being triggered, misfire, or problems with ignition timing.

In this section, you’ll learn everything there is to know about trouble codes and error codes, including their potential issues and the procedure to fix them.

After replacing the crankshaft sensor, it is important to understand the necessary tasks for proper replacement. This article will provide you with a comprehensive understanding of the steps required for replacing the sensor, including how to connect it to the engine computer and ensuring the battery is properly connected.

Ensure That the Crankshaft Position Sensor Was Installed Properly

After changing your crankshaft position sensor, if your car still won’t start, you probably didn’t install it properly.

Therefore, the first thing you should check is whether they are installed correctly or not. If not, you must address the problem, which will resolve your issue.

  1. Let’s look at how to properly repair a crankshaft sensor in a vehicle’s engine. Retrace your actions and compare it to your installation procedure. Correct any errors you made in your vehicle’s engine, and your issue with the vehicle should be resolved.

How to Replace a Crankshaft Position Sensor

Before replacing the crankshaft position sensor, it’s important to confirm if your car’s engine has a faulty crankshaft position. By connecting a code scanner to your vehicle, you can inspect the engine. This allows you to check the camshaft sensor and crankshaft sensor.

Replacing the crankshaft position sensor is simple. Its placement can be found in your owner’s handbook, however in the majority of contemporary cars, it is between the engine and the transmission.

The crankshaft sensor in a car’s engine can be replaced by following these steps.

  • Wait for the engine to cool down before turning it off.
  • Given that the crankshaft position sensor is an electrical component, disconnect the battery’s negative connector.
  • Track down the crankshaft position sensor.
  • The retaining bolt holding the crankshaft sensor in place needs to be loosened.
  • There won’t be much room to work on it, so you’ll need to use a little extension to remove it.
  • You can remove the retaining bolt with your fingers when it has become loose.
  • The sensor’s electrical connector should be disconnected.
  • The old sensor should be removed from the engine.
  • The new crankshaft sensor and the O-ring should both receive some oil.
  • Replace the old sensor with the new one.

The technique of replacing the old sensor is done in reverse of how it was removed. After replacing the crankshaft sensor, if your car still won’t start, check to see whether you ignored to reconnect the battery.

What to Do After Replacing Crankshaft Sensor

  • Make sure that you installed the sensor correctly.
  • You should carefully review each step to see if you made any mistakes. If so, correct them. Due to their similar appearances, many people mistake the camshaft sensor for the crankshaft sensor.
  • But keep in mind that the crankshaft position sensor is normally found at the bottom of the engine, while the camshaft sensor is typically found at the top. Your issue won’t be resolved by changing just one instead of the other.
  • Even if the installation went without a hitch, the connectors could degrade, there might be a wiring problem, or the crankshaft sensor could malfunction once more. All of these elements will make it impossible for the automobile to start. Before continuing to the next stage, double-check these items to make sure everything is in order.

Once you confirmed that the crankshaft sensor has been replaced correctly then what to do next after replacing crankshaft sensor replaced, Reset it.

Note: Resetting required few tools in order to reset it such as scanner, In case if you don’t have a scanner and want to reset it then there is a process of how to reset without scanner. 

Reset the Crankshaft Position Sensor

After completing the replacement, you could believe that resetting the crankshaft position sensor is not necessary. However, are you aware of what occurs if the replaced crankshaft position sensor is not relearned?

In some circumstances, if you don’t reset the check engine light after replacing the crankshaft position sensor, the car won’t start or check engine light still on after replacing crankshaft.

Reset can done in two ways:

  1. Reset Crankshaft Position Sensor with Scanner
  2. Reset Crankshaft Position Sensor without Scanner

How to Reset Crankshaft Position Sensor with Scanner?

It’s a good idea to check for issue codes after replacing the crankshaft sensor if you have access to a scanner. Because unless the sensor has been reset, any misfiring will go undetected by the ECU even if the car runs perfectly without doing so.

Resetting the camshaft sensor and crankshaft sensor activates the check engine light when necessary and warns the system of a misfire. However, if your car won’t start or if the check engine light is already on due to a malfunctioning crankshaft sensor, follow these instructions to reset it:

  • Connect the code scanner to the computer of your automobile.
  • The sensor that was previously malfunctioning should no longer have any error codes.
  • A DTC P1336 CKP Variation Not Learned signal need to be present.
  • Close the hood and apply the brake while obstructing the drive wheels.
  • Check the temperature of the engine coolant and oil before starting the engine.
  • Turn off the engine for a brief period of time.
  • Select CASE To get the sensor ready for the learning process, learn on your scanner.
  • Verify the transmission is in the park position.
  • Start the engine, use the brakes, and maintain a firm grip on the pedal.
  • You can examine the Diagnostic Trouble Code, or DTC P1336, when the engine reaches the idle position.
  • It will either say that the CASE has been learned or has not.
  • If it has mastered the CASE, the reset is finished and you are done.
  • Check for additional diagnoses if it hasn’t learned the case.
  • Restart the learning process after clearing the error codes.


How to Reset Crankshaft Position Sensor without Scanner?

Resetting without scanner can be done by using two methods, to be more precise and detail required of each step of how to be done without using scanner, follow this topic.

Frequently Asked Questions:

Why should I replace my crankshaft sensor?

Many different engine performance problems, including stalling, misfires, and slow acceleration, can be brought on by a defective crankshaft sensor. A damaged crankshaft sensor can be replaced in order to improve engine performance.

How do I know if my crankshaft sensor needs to be replaced?

Engine stalls, misfires, sluggish acceleration, and a Check Engine light are all signs of a bad crankshaft sensor. A diagnostic scan can also show whether the sensor is broken.

What should I do after replacing the crankshaft sensor?

After replacing the crankshaft sensor, it is important to clear any diagnostic trouble codes stored in the vehicle’s computer. Then, test drive the vehicle to ensure that the engine is running smoothly.

About The Author

Avatar for Ibrar Ayyub

Ibrar Ayyub

I am an experienced technical writer holding a Master's degree in computer science from BZU Multan, Pakistan University. With a background spanning various industries, particularly in home automation and engineering, I have honed my skills in crafting clear and concise content. Proficient in leveraging infographics and diagrams, I strive to simplify complex concepts for readers. My strength lies in thorough research and presenting information in a structured and logical format.

Follow Us:
All About Cars News Gadgets >> Auto Repair >> What to Do After Replacing Crankshaft Sensor: Essential Steps
Scroll to Top