P0342 Code - Camshaft Position Sensor 'A' Circuit Low Input

What Does P0342 Mean?

The PCM has detected an incorrect voltage reading or waveform from the camshaft position sensor circuit for camshaft sensor “A” in engine bank 1. 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 P0342 ?

There are a number of issues that can trigger a P0342 code. These include:

• A weak or dead battery
• An open or shorted camshaft position sensor wiring harness
• A defective starter motor
• A problem in the starting system circuit
• A defective camshaft position sensor

How do you troubleshoot P0342 ?

The engine system, in conjuction with the engine control module (ECM)/powertrain control module (PCM), activates the P0342 code solenoid valve to control oil pressure to the engine mechanism that is installed in the valve system to switch valve timing between Low and High.If the engine solenoid valve has an open or short circuit, a DTC is stored.

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