OBD-II code · Powertrain (generic)
P054A Cold Start B Camshaft Position Timing Over-Advanced Bank 1
Cold Start B Camshaft Position Timing Over-Advanced Bank 1: the control module has detected this fault condition. This relates to engine timing; a fault can cause rough running, a no-start, or timing errors.
Is it safe to drive with P054A?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyPhaser stuck in advanced position
Symptoms
- Check engine light on
- Power loss especially in mid-rpm range
- Possible rough idle or stalling
- Increased fuel consumption
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 2–5 h
- Emissions test
- Likely to fail
- Parts involved
- Cam Phaser B B1, Oil Supply
Related codes
- P052ACold Start A Camshaft Position Timing Over-Advanced Bank 1
- P052CCold Start A Camshaft Position Timing Over-Advanced Bank 2
- P054CCold Start B Camshaft Position Timing Over-Advanced Bank 2
- P0547Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 1
- P0548Exhaust Gas Temperature Sensor Circuit Low Bank 2 Sensor 1
- P0549Exhaust Gas Temperature Sensor Circuit High Bank 2 Sensor 1
- P054BCold Start B Camshaft Position Timing Over-Retarded Bank 1
- P054DCold Start B Camshaft Position Timing Over-Retarded Bank 2
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.