Exhaust Camshaft Position Timing - Over-Advanced (Bank 2)
The exhaust camshaft on Bank 2 is rotating too far ahead of where it should be, like a musician playing notes before the conductor's beat. This throws off the engine's timing and emissions control.
The ECU monitors exhaust camshaft position using a camshaft position sensor and compares actual timing against the crankshaft reference. When the exhaust cam advances beyond the maximum allowable threshold for an extended period, the ECU triggers P0024. This typically occurs during steady-state or load conditions where timing should be controlled.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Exhaust Cam Advance (Bank 2) | Within ±5 degrees of target timing | Advanced >8-12 degrees beyond target for >2 seconds |
| VVT Solenoid Response | Solenoid duty cycle 20-80% | Unable to retard cam; stuck high or sensor signal loss |
Code P0024 is a moderate fault. You can generally drive to a workshop, but avoid long trips or high-load driving (motorway, uphill towing) until it is diagnosed. If the code keeps returning after clearing, or if you notice the symptoms listed above worsening, do not delay professional diagnosis. Many moderate codes have multiple possible root causes — a mechanic with live OBD data can identify the exact fault more efficiently than part-by-part trial and error.
Once the fault is repaired, P0024 can be cleared using any OBD-II scanner. Connect the scanner, navigate to "Clear Codes" or "Erase DTCs," and confirm. The check engine light turns off immediately.
The code will return if the root cause was not actually fixed. The ECM re-detects the fault within 1–3 drive cycles and sets the code again.