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How To Reset Crankshaft Position Sensor

If you’re like most drivers, your car relies on a few key systems to keep you safe on the road. One of these is the crankshaft position sensor. If it goes wrong, your car may not start. In this blog post, we’ll walk you through how to reset the crankshaft position sensor on a Ford Fiesta. By following these simple steps, you can get your car back on the road in no time.

What is the Crankshaft Position Sensor?

The crankshaft position sensor is a device that monitors the position of the crankshaft. If the sensor detects an error, it can send a signal to the engine control unit (ECU) to correct the problem. The crankshaft position sensor should be reset every time you change the engine oil and every time you replace the crankcase oil filter.

How to Reset the Crankshaft Position Sensor

If the crankshaft position sensor (“CPS”) signal is invalid or if there is an issue with the sensor, the engine may not crank properly or at all.
First, check to see if the CPS signal is valid. To do this, disconnect the battery and ground the sensor while turning the engine over. If the CPS signal changes from invalid to good, then there is a problem with the sensor. If the CPS signal stays invalid, it means that either the sensor itself is bad or there is an issue with one of the wiring connections between the sensor and ECU. In either case, you will need to replace the Sensor.
If your engine does not crank at all or seems to be running rough, it’s likely that there is an issue with one of the camshafts or valves. The best way to diagnose this issue is to have a mechanic perform a valve clearance test on each camshaft and Valve Rocker Arm (VRA) in your engine.

How often should the Crankshaft Position Sensor be reset?

The Crankshaft Position Sensor (CKP) monitors the crankshaft for proper timing and alignment. The CKP should be reset at least every 2,500 miles or every time the engine is run in a new gear.

What to do if the Crankshaft Position Sensor fails to reset

If you are experiencing issues with your car’s crankshaft position sensor not resetting, there are a few things that you can do to troubleshoot the issue. First, check the wiring and connections to the sensor. Make sure that all of the wires are connected properly and that there is no slack in the wiring. Next, check for any debris or mechanical problems that may be blocking the sensor from detecting rotation. Finally, try resetting the sensor by applying a small amount of force to the connector at the base of the sensor.