VVT presents additional diagnostic challenges and repair opportunities to the service industry including new trouble codes. This gives engineers flexibility in improving fuel economy and power while continuing to meet emissions standards. Phasers commonly can be found on just the exhaust cam or on both the intake and exhaust cams.Īlteration of camshaft position changes the cam centerline and the lobe separation angle between intake and exhaust cams. In this hold position, neither chamber receives pressure nor is drained. If you would like to add anything, please leave a comment below.Figure 2: The oil control valve is the traffic control device of oil pressure. Good luck diagnosing the P0012 in your Ford F150. If it has been an excessive period of time since the last time that you’ve had an oil change, or you find that there may be reason to believe that the oil thickness is wrong, change the oil and see if that helps anything. Make sure that you check everything else that you can before actually opening up an engine. Here’s a phenomenal video on how to test a cam/crank actuator. Here’s how to tell if you have a bad ECM Autoblog: Symptoms of a Bad ECM. Bad ECM (highly unlikely)- If the F150’s computer goes bad, then it may throw this code along with other issues.YouTube: How to Find an Open or Short the Fast Easy Way. The wiring harness to the intake camshaft position sensor may also develop a poor connection. Wiring Issues– The wiring going from the solenoid to the ECM can become damaged or broken.You certainly don’t want to start here, since a lot of the time it’ll be something else that causes the P0012 to appear. Bad Intake Camshaft Position Actuator Solenoid– The actuator solenoid itself can go bad over time.Engine Oil– If the engine oil is dirty or low, it may cause the actuator to function improperly.Here’s more on that from this site: Timing Chain Jumped Symptoms and Diagnosis Engine Timing– If the camshaft(s) are no longer synced to the crank properly (such as if the timing chain jumped a tooth), it can cause the engine timing to be off enough to throw the P0012 even though it’s not the Actuator’s fault.There are quite a few different things that can cause the P0012. Tough to Start Motor– With the timing over retarded, it is going to be difficult to start the motor, especially when it is warm.Service Engine Soon Light– Most of the time, you’ll be able to feel or see one of the above symptoms, but if you can’t, the service engine soon light will still come on and let you know that something is wrong.This is because the cam profile will not allow it run a performance power curve when you need more power. Lost Power– The F150’s engine will not be able to produce as much power.Decreased Gas Mileage– Now the engine can no longer adjust its cam timing on the fly, it will no longer be able to produce optimal combustion, which equals poor economy.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 F150: 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 F150 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 F150 as it does on any other vehicle. The list of VVT vehicles is growing, and the Ford F150 can have VVT, and is known to develop this code. It affects vehicles with variable valve timing (VVT).
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