Our mechanic shows you how to diagnose a P0343 code (“Camshaft Position Sensor Circuit High Input”), and the electrical issues that could be causing it. Your car’s symptoms could include engine bucking, surging, stalling, taking longer than usual to start, or not starting at all.
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You may go to start your car and see the check engine light is on and the engine is running rough. After grabbing and connecting your handy OBD II scan tool or code reader, you find out you have a P0171 code. We’ll review what this code means, how serious it is, and how to diagnose it yourself.
Watch this video for expert mechanic help diagnosing P0171 code causes, and keep reading for more details: