P0346 Code - Camshaft Position Sensor 'A' Circuit Range/Performance Bank 2

What Does P0346 Mean?

The camshaft position sensor is part of the system that is used for calculating fuel delivery and ignition timing. If the PCM has detected an incorrect voltage from the sensor’s circuit, it means that something within the camshaft position sensor system is faulty, which could affect fuel delivery or ignition timing actions.

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What are the common causes of P0346 ?

• An air leak forward of the DPF will change the sensor readings resulting in the code
• Rusty exhaust systems, cracked exhaust manifolds or damaged or missing gaskets or donuts will cause air leaks.
• Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.

How do you troubleshoot P0346 ?

While fuel economy was increased, acceleration was seriously compromised, and the loss of engine vacuum led to a dangerous loss of braking assist when the P0346 code system was in four-cylinder mode. In addition to these issues, while the company proposed a hydraulically controlled system that could be switched from within the car, the version they implemented had to be manually changed in the engine compartment using hand tools.

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