P0012 - Intake Camshaft Position Timing - Over-Retarded (Bank 1)

About Trouble Code P0012

An engine’s computer will give a code of P0012 when the intake camshaft timing for bank 1 is more retarded that it is telling it to be. The condition is most often seen during the advancing or in this care retarding phase of the timing in the camshaft.

Symptoms of Trouble Code P0012

With a retarded timing position the engine will have a hard time starting. The fuel efficiency will decrease and depending on the position you may find stalling, and a rough running vehicle. Giving the vehicle, an emissions test will most likely show that it is not up to federal standards. As with all trouble codes the check engine light will also trigger.

Causes of Trouble Code P0012

Commonly the cause of trouble code P0012 is an oil upkeep problem. Using a low-quality oil or not having it changed frequently enough can cause this code to occur. This can also be seen if the variable camshaft timing or oil control valve is stuck in an open position. You may also find the camshaft phaser is malfunctioning or stuck in a retarded position.

How to Fix Trouble Code P0012

Validating the trouble code by clearing the code and driving the vehicle to see the code resurface is always where you should start. After this, check to make sure the oil and filter are clean with the correct type of oil for the vehicle. There may be corrosion or other problems in the wiring to the camshaft oil control valve. The camshaft oil control valve may also have issues and need to be replaced. Repairs may need to be made to the timing chain alignment if timing problems occur.

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