Cam timing on bank 1 is more advanced than commanded. The driver may notice rough idle, stalling or weak power.
Likely causes, most common first
- Low or dirty engine oil
- Sticking VVT solenoid
- Faulty cam phaser
- Stretched timing chain
Parts usually involved
- Engine oil
- VVT solenoid
- Cam phaser
- Timing chain
Test before you replace
Check oil level and condition first, then command the solenoid and compare actual timing with target.
General guidance for generic OBD2 codes. Always follow the maker's procedure for the car in front of you.