The error code P0016 is triggered when the bank 1 camshaft position sensor doesn’t match the signal from the crankshaft position sensor. This can cause various issues with the overall functioning of the engine and can lead to increased fuel consumption and rough engine idling.

Common Symptoms

There are several common symptoms of an error code P0016, which can include:

  • The Check Engine Light will be illuminated
  • The engine may perform erratically, running rough or stalling
  • The engine may have a hard start or you may notice a reduction in power
  • Fuel consumption will increase

Issues with the functioning of the engine will largely be determined by the exact cause of the fault, so it may not be present when the error is triggered.

Possible Causes

Like most error codes, P0016 can be triggered by a number of things. The most common include:

  • Jumped teeth in the timing chain are causing the camshaft timing to be out of position
  • Issues with the camshaft phaser are causing it to be out of position
  • Incorrect oil viscosity is causing the flow to the phaser to be reduced
  • The oil control valve has a restriction in the filter

How to Check

A manual inspection should be performed initially to ensure there is no damage to the wiring or the connections to the oil control valve or the crankshaft or camshaft sensors.

The message on the error screen should be noted before resetting and performing a road test to see if and when the error reoccurs. This can help diagnose what exactly is triggering the error.

The engine oil should also be examined to ensure that it’s clean and the viscosity matches the recommendation of the car manufacturer.

As with most repairs, it’s important to determine the exact cause of the issue before any repairs or replacements are attempted. A pinpoint inspection is usually the best way to determine what the cause of the error is, and will facilitate a straightforward solution.

How to Fix

Resetting the error code and performing a full road test will help find the exact cause of the problem.

The bank 1 camshaft sensor may need replaced, as may the camshaft oil control valve for the bank 1 exhaust camshaft.

The wiring on the camshaft sensor and the oil control valve should be repaired and potentially replaced if it has been damaged.

If the timing chain and guides have been identified as problematic, they should also be replaced.

The error code P0016 can be flagged intermittently if there’s a problem causing excess vibration or heat. It can be challenging to verify these issues, so if they cannot be confirmed then you should consider replacing the camshaft sensor.