P0340 - CAMSHAFT POSITION SENSOR CIRCUIT MALFUNCTION

POST UPDATED IN July, 2020

Description of DTC code P0340 Generic

The ECM Engine Control Module uses the information registered in the Camshaft Position Sensor, which records the speed at which the camshaft rotates to control both the ignition and the injection. This sensor detects the decrease of the camshaft to identify a cylinder; it also detects the position of the piston. The system of said sensor consists of a rotating part, a disc and a static part.

Symptoms of fault code P0340 Generic

  • The Check Engine light is on.
  • The power of the engine is lost.
  • The engine may have difficulty starting or even not starting.

Causes of OBD2 P0340 Generic

A code P0340 can have one or more of the following problems:

  • The camshaft sensor is defective.
  • The Crankshaft Position Sensor may have failed.
  • PCM module may be presenting failures.
  • A cable from the sensor circuit to the PCM may be grounded or shorted.

Possible solutions of the DTC code P0340 Generic

To fix the DTC code P0340 you can check the following components:

  • Check that the wiring and connectors of the circuit are correctly connected.
  • Check for continuity between the circuit cable and the PCM pinout.
  • Check that the Camshaft Position Sensor is working.
  • In case the cables or connectors are failing, replace them.
  • Check the crankshaft position sensor circuit and check the 3 sensor pins, which are power, ground, and signal (in Volts).
  • Diagnose, and if necessary, replace the PCM (Powertrain Control Module)

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