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
P050B
Cold Start Ignition Timing Performance
Generic
Vehicle Speed and Idle Control System
High severity
P050C
Cold Start Engine Coolant Temperature Performance
Generic
Vehicle Speed and Idle Control System
High severity
P050E
Cold Start Engine Exhaust Temperature Too Low
Generic
Vehicle Speed and Idle Control System
High severity
P1271
Air Fuel Ratio Sensor 1 Circuit No Activity Detected Bank 1
Renault
Fuel and Air Metering
High severity
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