What is a camshaft phaser?
What is a camshaft phaser? A cam phaser is a computer-operated sprocket attached to the camshaft, mounted on the cam drive sprocket, which controls the camshaft. The cam phaser's primary duty is to adjust the camshaft's position relative to the crankshaft and the pistons connected to it while the engine is running. What causes the p0022 Ford code to fail? The powertrain control module ( PCM) monitors the variable camshaft timing (VCT) position for an over-advanced camshaft timing. The test fails when the camshaft timing exceeds a maximum calibrated value or remains in an retarded position. Need more information on...