P0390 Camshaft Position Sensor “B” Circuit (Bank 2)

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P0390 Camshaft Position Sensor “B” Circuit (Bank 2)

Technical Description

Camshaft Position Sensor B Circuit Malfunction (Bank 2)

What does that mean?

This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to OBD-II equipped vehicles. Although generic, the specific repair steps may vary depending on make/model.

This P0390 trouble code indicates that a problem was detected in the camshaft position sensor circuit of bank 2.

Since it says circuit, that means the problem could lie in any part of the circuit – the sensor itself, the wiring, or the PCM. Don’t just replace the CPS (camshaft position sensor) and think that will definitely fix it.

Note: The camshaft sensor "B" is generally the sensor on the exhaust camshaft. This code is basically identical to P0345, however refer to a vehicle specific repair manual to identify the correct sensor on your vehicle/engine.

Symptoms

Symptoms can include:

  • Hard starting or no start
  • Rough running / misfiring
  • Loss of engine power

    • Causes

    A code P0390 could mean one or more of the following has happened:

  • a wire or connector in the circuit could be grounded/shorted/broken
  • the camshaft position sensor may have failed
  • the PCM may have failed
  • there exists an open circuit
  • the crankshaft position sensor may have failed

    • Possible Solutions

    With a P0390 OBD-II trouble code, diagnosis can be tricky at times. Here are some things to try:

  • Visually inspect all the wiring and connectors in the circuit
  • Check for continuity in the circuit wiring
  • Check the operation (voltage) of the camshaft position sensor
  • Replace the camshaft position Sensor Bs required
  • Check the crankshaft position circuit as well
  • Replace circuit wiring and/or connectors as required
  • Diagnose/replace the PCM as required

    • Need help?

    Let us fix your problem. You are most welcome our diagnosis experts have in most cases the knowledge and skills to find the cause of the error code p0390 and to solve the problems.

    Make an appointment for diagnosis

    "Delete Error Code Permanently, Disable DTC Error Code Function for p0390 in the ECU"

    In extreme cases, we even have the option to permanently remove the specific DTC p0390 and disable the function of the specific error code in the ECU. All other fault code functions will then continue to work to protect the engine. This is different from clearing an error code with a diagnostic device. We have the option to permanently remove the function of the specific error code, so that it never comes back. Also emergency running that occurs on the specific error code can be solved in most cases.

    Of course we prefer to first try to solve the cause of the error code, but sometimes the only solution is to permanently disable the DTC function of p0390.

    Make an appointment for permanent removal of p0390

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