P0348 Code - Camshaft Position Sensor 'A' Circuit High Input Bank 2

What Does P0348 Mean?

The PCM has detected an incorrect voltage reading or waveform from the camshaft position sensor circuit for camshaft sensor “A” in engine bank 2. The camshaft position sensor is a stationary electro-magnetic sensor that works in conjunction with teeth or notches on the camshaft. The teeth or notches on the camshaft interrupt the sensor’s magnetic field (as perceived by the PCM) to input camshaft position data. This data is used in calculating fuel delivery and ignition timing.

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What are the common causes of P0348 ?

There are quite a few causes that could lead the PCM to store the P0348 code. Those include:

• Electrical components, such as wiring, that have been damaged by leaking engine fluid
• Bad camshaft sensors
• Bad crankshaft sensors
• Open or shorted camshaft position sensor harness
• Faulty starter motor
• Weak battery
• Faulty starting system circuit

How do you troubleshoot P0348 ?

With the valve disconnected, the red voltmeter lead should be attached to the IMRC valve power wire and the black voltmeter lead connected to ground. You might continue by connecting the scanner to the vehicle diagnostic connector and retrieving all stored codes and freeze frame data.



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