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Code definition P0014
Camshaft Position “B” – Timing or System Performance Excessive (Bank 1)
What does the code P0014 mean
P0014 is a generic OBD-II code which indicates that the engine control module (ECM) has determined that the exhaust camshaft in bank 1 is further extended than the ECM told it to be. This overtaking condition can occur during camshaft leading or lagging.
What causes the code P0014?
- The exhaust camshaft exceeded RPM when the ECM commanded the camshaft to retract to a lower camshaft position.
- The viscosity of the oil is too high, causing the channels to clog, restricting the flow of oil to and from the camshaft chamfers.
- Camshaft Shifter is locked in the extended position.
- The camshaft oil control coil on the bank 1 may be shorted in the open position.
What are the symptoms of the P0014 code?
- The Check Engine light comes on to indicate a problem.
- If the camshaft is pushed too far forward, the engine may be difficult to start.
- The fuel mileage will be reduced because the camshafts are not in the optimal position for good fuel mileage.
- Depending on the position of the camshaft, the engine may not start or will stall.
- Engine exhaust emissions will result in the vehicle failing the exhaust emission tests.
Note: Symptoms may vary depending on the camshaft timing position when the camshaft phaser has stopped moving synchronously.
How can a mechanic diagnose the code P0014?
- Visually inspect connector, wiring, or valve for any problems with the exhaust camshaft OCV valve on bank 1.
- Checks the engine oil level and condition to see if it is full and viscous.
- It scans and documents engine codes and looks at data from frozen frames to see when the code was set
- Clears all codes and then starts the engine to see if code P0014 returns and if the fault is still present.
- Monitor the timing data while disconnecting the OCV from the exhaust camshaft to see if the timing changes. A change would indicate that the valve is operational and the problem is with the wiring or the ECM.
- Perform manufacturer specific tests for the code P0014 and repair as needed.
Note: Follow the manufacturer’s recommended spot testing to narrow down the problem as each engine may be tested differently and possible internal engine damage may occur if the tests are not performed according to the correct procedure.
Common errors in diagnosing P0014 code?
Follow these simple tips to avoid mistakes:
- Visually check that all electrical connections are secure and free from corrosion.
- Check that the engine oil is full, clean, and of the correct viscosity.
- Check that the code is still displayed before carrying out any further tests.
- The manufacturer’s test procedures must be performed step by step to avoid misdiagnosis and replacement of good components.
- Do not replace any sensor or component unless testing indicates a problem.
How serious is the P0014 code?
- The engine may run erratically and stall or have trouble starting.
- Fuel consumption can increase, causing carbon to deposit on engine valves and pistons.
- Prolonged timing operation can cause the valves to touch the piston if the timing chain has skipped the sprocket teeth.
What repairs can remove the code P0014?
- Reset error codes and perform road tests.
- Change the oil and filter using oil of the correct viscosity for the engine.
- Repair or replace the wiring of the camshaft oil control valve for the exhaust camshaft bank 1.
- Replacing the camshaft oil regulating valve for the exhaust camshaft position 1
- Repair or replace the timing chain and camshaft phasers in accordance with the service manual.
Additional notes regarding code P0014
If the camshaft timing chain is skipping due to worn guide rails or failure of the tensioner, this code can cause. Correct diagnostic procedures are required to correctly diagnose a timing chain or OCV system.