B Camshaft Position - Timing Over-Advanced or System Performance Bank 2
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.
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.
Real-world scan data
Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.
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?+
Can I just clear P0024?+
Related codes
Read & clear P0024 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.