Poor Idle Quality– If the camshaft actuator fails it can be tough for the engine to find the right idle speed or idle smoothly.Here are some of the typical symptoms of P0012 in the Ford Expedition :
When the timing is over retarded, it can really cause some issues with the motor. So, if you have low oil pressure or dirty oil, it can keep them from doing their job properly, and trigger P0012. They are hydraulic, which means that they use the vehicle’s engine oil to control lift. With P0012, the camshaft actuator is leaving the timing retarded.Ĭamshaft Position Actuators change the lift of the camshaft up to 25 degrees. This allows for a more efficient cam profile at any speed. The Ford Expedition utilizes camshaft actuators to change the valve lift depending on the RPM of the motor. This ability to alter valve timing is great for both power and fuel economy. It allows the engine to act as though it has different camshaft profiles at different RPM’s. VVT changes the frequency and distribution of gases entering and exiting the combustion chamber. P0012 is generic, which means that it has the same definition for the Expedition as it does on any other vehicle. The list of VVT vehicles is growing, and the Ford Expedition can have VVT, and is known to develop this code. It affects vehicles with variable valve timing (VVT).
