Cold Start A Camshaft Position Timing Over-Retarded Bank 1
Same as P052A with the phaser stuck retarded - cold-start strategy cannot pull the cam to the advanced position needed for fast catalyst light-off.
Affected components
- Cam phaser a b1
- Oil supply
Common causes
- High likelihood: Phaser stuck in retarded position
Possible symptoms
- Check engine light on
- Power loss especially in mid-rpm range
- Possible rough idle or stalling
- Increased fuel consumption
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
Related codes
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.