Technical Definition:

Camshaft Position (CMP) (Sensor B) Circuit (Bank 2)

Technical Description:

This diagnostic trouble code (DTC) is a generic powertrain code. It is considered generic because it applies to all makes and models of vehicles (1996-newer), although specific repair steps may be slightly different depending on the model.

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

Possible Causes:

• 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 Symptoms:

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

Possible Solutions:

• 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

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes: