The error code P0014 is triggered when the ECM determines the bank 1 exhaust camshaft is more advanced than it was instructed to be by the ECM. This can happen during the retarding or advancing of the camshaft timing, and leads to an over-advanced condition.
There are several common symptoms of an error code P0014. These include:
- The Check Engine Light is illuminated
- If the camshaft is stuck in an advanced position the engine may have a hard start
- The incorrect positioning of the camshaft can lead to increased fuel consumption
- The position of the camshaft can cause the engine to stall or run rough
- It’s likely that the car will fail an emissions test
There are several common causes of a P0014 error code, which can include:
- The ECM has instructed the exhaust camshaft to retard to a lower level, however it has remained in an advanced position
- There is an issue with the viscosity of the engine oil which is clogging the passage to the camshaft phasers, restricting the flow of oil
- The camshaft phaser may have become stuck in an advanced position
- The bank 1 oil control solenoid may have become stuck in an open position
What To Check
As with most repairs, the first step is usually conduct a visual inspection of the common problem areas. In case of an error P0014, the wiring, valves and connections should be checked in the oil control valve of the bank 1 exhaust camshaft.
The oil viscosity should be checked to see if it matches the manufacturer’s recommendation.
As with most OBD2 error codes, it’s best to take a screen shot of the error before resetting and performing a road test to see if it reoccurs. If the error is triggered again, noting the circumstances can make it easier to perform a pinpoint diagnosis.
Another diagnostic step is to monitor the timing data when disconnecting the oil control valve to the exhaust camshaft. If the timing changes, it indicates that the issue is with the ECM or is potentially a wiring issue.
It’s important that pinpoint diagnostic testing is undertaken to ensure the exact cause of the error is determined. Replacing any components without determining the specific problem is likely to result in the error reoccurring and the repair becoming more expensive than it needs to be.
How to Fix
Resetting the error and performing a road test will help determine the conditions which result in the error, making it easier to fix.
Replacing the oil can help resolve the error code if there was an issue with the viscosity. When replacing the oil, make sure to check the manufacturer’s recommendations to ensure the right product is used.
The wiring for the oil control valve for the bank 1 exhaust camshaft may need to be repaired or replaced. This will be determined during the visual inspection. The oil control valve itself may need replaced if it is overly worn or damaged.
If the tensioner or guides for the camshaft are causing the timing chain to jump, this can also trigger the code. It can be worthwhile checking this as part of the repair process.
Finally, the camshaft phasers and timing chain may need to be repaired or replaced.