Code P0024 indicates that the engine computer has detected that the exhaust camshaft on Bank 2 is more advanced than the commanded timing. This means the variable valve timing (VVT) system is not returning to the desired position, often due to oil flow issues or a stuck actuator. Bank 2 refers to the side of the engine opposite cylinder 1.
The oil control valve can stick open or closed due to debris or sludge, continuously advancing the camshaft timing.
Incorrect oil viscosity or contaminated oil can prevent the VVT system from operating properly, causing timing deviations.
The camshaft phaser itself can mechanically fail and lock in an over-advanced position instead of rotating freely.
Excessive slack from a stretched timing chain or weak tensioner can alter camshaft position readings relative to the crankshaft.
Corroded, chafed, or loose wiring to the oil control valve can cause an intermittent or constant incorrect signal.
The engine computer rarely causes this code, but an internal driver failure could incorrectly command the VVT solenoid.
It is not recommended to drive long distances with this code, as incorrect camshaft timing can cause poor drivability, increased emissions, and potential internal engine damage.
Not necessarily. While a stretched or jumped timing chain can trigger this code, it is more commonly caused by a stuck VVT solenoid or oil flow issues.
If the code is caused by dirty or low oil, an oil change can often resolve the issue. However, if the VVT solenoid or phaser is mechanically stuck, fresh oil will not fix the problem.
No, replacing the engine computer is almost never the correct fix for P0024. The code is overwhelmingly caused by mechanical VVT components, oil issues, or wiring faults, not a defective PCM.