This code indicates the engine control module detects the intake camshaft on bank 1 is positioned more advanced than commanded. It typically points to a malfunction within the variable valve timing system, often related to oil pressure or mechanical binding. Immediate attention is recommended to prevent potential engine damage.
Variable valve timing systems rely on clean engine oil at correct pressure to function. Sludge or low levels prevent the solenoid from moving the camshaft properly.
The oil control valve may stick open or become clogged with debris, causing timing to remain advanced. This is a common wear item on many engines.
Mechanical wear prevents proper timing alignment between the crankshaft and camshaft. This allows the camshaft to drift out of the specified range.
Internal mechanical failure within the timing actuator prevents it from holding or changing position. This often requires significant disassembly to replace.
Open or short circuits in the solenoid control wiring can send incorrect signals to the component. Heat and vibration often degrade insulation over time.
Internal control driver failure is statistically rare compared to mechanical causes. This should only be considered after all other components are verified.
The definition is universal; the diagnostics are engine-specific. Open your vehicle for the codes documented for it:
Rarely. Mechanical issues like oil pressure or solenoid failures are far more common than PCM failure.
Short distances are possible, but prolonged driving may cause catalytic converter damage or engine wear.
It may resolve the issue if the oil was low or sludge-clogged, but mechanical faults often persist.
Bank 1 refers to the side of the engine containing cylinder number 1.