P0024
B Camshaft Position - Timing Over-Advanced or System Performance Bank 2
Variable valve timing
Generic OBD-II
High
What it means
P0024 sets when the bank 2 exhaust ("B") camshaft timing is more advanced than the ECM commanded, or the variable-valve-timing system isn't performing to spec. It's usually a stuck oil-control solenoid or an oil-related phaser problem. The engine typically still runs, but idle quality and acceleration suffer, so it's worth fixing promptly.
High
Can I keep driving? Often drivable but rough — the bank 2 exhaust cam timing is over-advanced, so expect rough idle, hesitation, and possibly stalling at low speed until it's fixed.
Common symptoms
What you'll notice
- Check-engine light on
- Rough or unstable idle
- Hesitation and poor acceleration
- Occasional stalling at low speed
- Reduced fuel economy
Common causes
Most likely first
- Stuck-open or stuck cam (VVT) oil-control solenoid holding timing advanced on bank 2Likely
- Low or dirty engine oil affecting phaser controlCommon
- Worn or stuck variable-cam-timing phaser stuck in the advanced positionCommon
- Faulty bank 2 camshaft position sensorLess often
- Damaged wiring or connector at the solenoid or sensorLess often
- Faulty ECM (rare)Less often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and check for companion VVT or cam-correlation codes.
- Check oil level and condition; service the oil and filter if it's low or dirty.
- Test and, if needed, clean or replace the bank 2 cam oil-control solenoid — a stuck solenoid is the most common cause.
- Inspect the solenoid and cam-sensor wiring and connectors.
- If the solenoid and oil are good, inspect the cam phaser for sticking in the advanced position.
- Clear the code and re-test to confirm timing returns to normal.
FAQ
Quick answers
Is it safe to drive with P0024?+
Short trips are usually okay, but over-advanced cam timing can cause rough running and stalling. Have it fixed soon to avoid being stranded and to protect drivability.
Can I just clear P0024?+
It returns until the stuck solenoid, oil, or phaser cause is repaired.
Related codes
Often seen with P0024
Read & clear P0024 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX