OBD fault code library
Look up any P or U code to see what it means, what causes it, the parts involved and how it gets fixed.
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Fault codes
P04A6
Exhaust Pressure Control Valve B Position Sensor/Switch Circuit
Generic
Auxiliary Emissions Control
Medium severity
P051D
Crankcase Pressure Sensor Circuit High
Generic
Vehicle Speed and Idle Control System
High severity
P052B
Cold Start A Camshaft Position Timing Over-Retarded Bank 1
Generic
Vehicle Speed and Idle Control System
High severity
P053B
Positive Crankcase Ventilation Heater Control Circuit Low
Generic
Vehicle Speed and Idle Control System
High severity
P06B7
Internal Control Module Knock Sensor Processor 2 Performance
Generic
Computer Output Circuit
High severity
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