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Will disconnecting the battery reset the crankshaft sensor?
No. The crankshaft sensor is located on the engine block and measures the position of the crankshaft. It can’t be reset by disconnecting the battery because there is no data stored to be reset. In most car models, you need to use an OBD2 scanner to clear the ECM’s trouble codes.
Crankshaft Position Sensor Function
The purpose of the crankshaft position sensor is to measure the position of the crankshaft. It might sound redundant, but it’s one of the most critical sensors in your vehicle. The crankshaft position sensor sends these measurements to the ECM, and the ECM uses them to optimize the rest of your vehicle’s timing.
If the crankshaft position sensor fails, then the ECM reverts to default values. While these values keep the engine running, you’ll likely notice various performance issues.
However, if the ECM doesn’t realize that the crankshaft position sensor has failed and is sending it errant measurements, the computer will optimize performance to inaccurate readings. This can quickly lead to more damage and expensive repairs.
How it’s done:
Can you drive with a messed up crankshaft sensor?
What would a faulty crankshaft sensor do?
- Issues Starting the Vehicle.
- Intermittent Stalling.
- Check Engine Light Comes On.
- Uneven Acceleration.
- Engine Misfires or Vibrates.
- Rough Idle and/or Vibrating Engine.
- Reduced Gas Mileage.