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Answered in 58 minutes by:
1/12/2021
David Craig, Auto Mechanic
Category: BMW
Satisfied Customers: 17,140
Experience: Owner/Mechanic at 3D Automotive
VerifiedHi my name is ***** ***** I'll be more than happy to assist you,
P054B BMW Possible Causes
Camshaft timing incorrectly set
Continuous oil flow to the Variable Camshaft Timing (VCT) piston chamber
VCT solenoid valve stuck open
Camshaft advance mechanism binding (VCT unit)
The Powertrain Control Module (PCM) monitors the Variable Camshaft Timing (VCT) position for an over-advanced camshaft timing during cold start up. The test fails when the camshaft timing exceeds a maximum calibrated value or remains in a retarded position.
P052B BMW Meaning
To assist with cold start conditions the camshaft timing can be adjusted to allow for optimum starting conditions. This Diagnostic Trouble Code (DTC) will set when the Engine Control Module (ECM) is unable to control the actuator correctly. Oil pressure and quality should be tested before any electrical fault finding is carried out.
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