Error P0014 – how to fix it?

Definition of the code P0014

“B” camshaft position – Excessively advanced timing or system performance (Bank 1)

What code P0014 means

P0014 is a generic OBD-II code that indicates that the engine control module (ECM) has determined that the exhaust camshaft in bank 1 is more advanced than the ECM told it to be. This overrun condition can occur when the camshaft is advanced or retarded.

What causes the P0014 code?

• The exhaust valve camshaft was overrun when the ECM commanded the camshaft to reverse to a lower timing level.
• The oil viscosity is too high, causing the channels to clog, which restricts oil flow to and from the camshaft phasers.
• The camshaft phasing unit is blocked in the extended position.
• The camshaft oil control solenoid on bank 1 may be shorted in the open position.

What are the symptoms of code P0014?

• The Check Engine light comes on, indicating a problem.
• If the camshaft is too far forward, the engine may start hard.
• Fuel mileage will be reduced because the camshafts are not in the optimum position for good fuel mileage.
• Depending on the camshaft position, the engine may not start or will stall.
• Engine emissions will cause the vehicle to fail emission tests.

Note: Symptoms may vary depending on the camshaft timing position when the camshaft has stopped moving synchronously.

How can a mechanic diagnose the P0014 code?

• Perform a visual inspection of the connector, wiring or valve for any problems with the OCV camshaft exhaust valve on bank 1.
• Check the engine oil level and condition to make sure it is full and has the correct viscosity.
• Scan and document engine codes and review freeze frame data to see when a code has been set
• Clears all codes and then starts the engine to see if the P0014 code returns and if the fault is still present.
• Monitor the timing data by disconnecting the OCV valve from the exhaust camshaft to see if the timing changes. The change would indicate that the valve is working and the problem is in the wiring or ECM.
• Perform manufacturer specific tests for code P0014 and repair as necessary.

Note: Follow the manufacturer’s recommended spot tests to reduce the problem, as each engine may be tested differently and there may be possible internal engine damage if the tests are not performed according to the correct procedure.

Common errors when diagnosing the P0014 code?

Follow these simple tips to avoid errors:

1. Visually check that all electrical connectors are secure and free of corrosion.
2. Check that the engine oil is full, clean and of the correct viscosity.
3. Verify that the code is still affixed before performing further tests.
4. The manufacturer’s test procedures should be performed step by step to avoid misdiagnosis and replacement of good components.
5. Do not replace any sensor or component unless testing indicates a problem.

How serious is the P0014 code?

• The engine may run erratically and limp or have difficulty starting.
• Fuel consumption may increase, causing carbon deposits on engine valves and pistons.
• Extended timing can cause the valves to contact the piston if the timing chain has jumped the sprocket teeth.

What fixes can clear the P0014 code?

1. Reset the error codes and perform road tests.
2. Change the oil and filter using the correct viscosity oil for the engine.
3. Repair or replace oil control valve wiring from camshaft to bank 1 exhaust camshaft.
4. Replace the camshaft oil control valve for position 1 exhaust camshaft bank.
5. Repair or replace timing chain and camshaft phasers according to service manual.

Additional notes on code P0014

If the camshaft timing chain jumps due to worn guides or tensioner failure, it may cause this code. Correct diagnostic procedures are required to properly diagnose the timing chain or OCV system.