Powertrain
generic / SAE
P054B
Cold Start B Camshaft Position Timing Over-Retarded Bank 1
Same as P052B on the B camshaft of bank 1. The camshaft position sensor identifies which cylinder is on the compression stroke — without it the ECM cannot run sequential injection or coil-on-plug ignition correctly.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number5 / 4B
Possible causes
- Phaser stuck in retarded position high
Symptoms
- Check engine light on
- Power loss especially in mid-rpm range
- Possible rough idle or stalling
- Increased fuel consumption
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 300–1500 €
- Estimated time: 2–5 h
- Component: cam phaser b b1
- Component: oil supply
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012