Crankshaft Sensor Testing: 3 Easy Ways to Know if It's Bad sensor can fail intermittently.
Learn how to test a crankshaft position sensor and its wiring harness step-by-step. If your Honda Civic has a P0335 code, rough idle, or won't start, this DIY guide is for you. I walk you through locating the sensor, back-probing the connector, and checking the Hertz (Hz) frequency to ensure the sensor is sending the right signal to the ECU, this sensor can fail intermittently. I’ll show you three levels of testing:
The Scan Tool/Tachometer check (No tools required).
The Multimeter check (Voltage & Ground).
The Oscilloscope check (Waveform pattern).
If you’ve got a bad crank sensor, your computer won't know when to fire the injectors or spark plugs. Here is how to find the problem fast.
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