How to Reset Crankshaft Position Sensor No Start Problem

The crankshaft position sensor is responsible for converting linear energy into rotational energy, and this rotational energy is what allows the engine to move. It powers the ignition and also gives efficiency to important parts of a vehicle.

Therefore, anytime you get into your car and turn the key to start it and it started, you must give thanks to the crankshaft position sensor.

It is the crankshaft position sensor that enables the ignition of a vehicle to function, and if it goes out of place, your car won’t start until you replace the sensor and reset it.

There are several steps to take when you want to reset the crankshaft position sensor when it has a No Start problem, this article will explain those various steps in detail.

How to Reset Crankshaft Position Sensor No Start Problem

The two known ways of resetting a crankshaft position sensor with a no start are either with a scanner or without a scanner. 

Resetting With a Scanner

To reset a crankshaft position sensor no start problem with a scanner:

• Step One: Connect the scanner to your car and turn the ignition on, do not start the car
• Step Two: Depending on your scanner, once it finally boots up, follow the steps provide for you and select your car brand, model, and manufactured year, and ensure to add the VIN if it requires you to do so.
• Step Three: Select diagnosis, select control unit, select power train, and select the ECM (Engine control module) and allow it to run
• Step Four: Click on the Special function and allow it to run
• Step Five: You will see the cam crank relearn, click on it
• Step Three: Start your engine
• Step Six: Depending on your brand of car, ensure that the engine cooling temperature is within the required number the scanner will tell you
• Step Seven: Once the temperature is where it should be, the relearn will start and complete itself without any issue.

Nonetheless, it is important to note that because of the type and brand of scanner you are using, this procedure may vary from the way it is explained in this article. However, it should be related, so follow with caution.

If you are still finding it difficult to do, you can watch the tutorial process done by Auto Repair Guys on their YouTube channel below. You will get more insight into what to do.

Resetting Without a Scanner

If you do not have a scanner to reset your crankshaft position sensor, you should quickly disconnect your car battery for 15 to 45 minutes to enable the ECU to reset all the codes caused by the sensor.

However, doing this will not relearn the crankshaft sensor as it has no memory that can reset, disconnecting the battery can only clear all the codes in the vehicle caused by the bad sensor. You need a OBD scanner tool to reprogram the sensor.

You can also take the car for a drive and ensure to accelerate up to 55 mph for about 10 to 15 minutes, the error code will clear itself. Drive it for some days, it will definitely clear itself. However, the best way to do this is to use a scanner.

Benefits of Resetting Crankshaft Position Sensor

The advantages of resetting the crankshaft position sensor are: 

1. No more “No Start” Problems

Once you reset and relearn your crankshaft position sensor, you won’t get any more ignition problems.

2. Check Engine Light Gets Fixed

If the Check Engine Light was on all the while, telling you to check the engine as a result of the bad crankshaft, this gets fixed, and the Check Engine light goes off.

3. Improved Gas Mileage

Since the failing crankshaft position sensor reduces the efficiency of gas consumption, resetting your crankshaft will help improve your gas mileage.

4. Curbs Acceleration Problems

Problems relating to acceleration, such as uneven acceleration while driving will also cease.

Conclusion

You can reset your crankshaft position sensor using two methods, with the scanner, and without a scanner. Whichever method you choose to use, ensure that you follow through with the steps properly.