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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OBD DashX shows which problems come with each code, how often they show up in other vehicles, and how to fix them — step by step.
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Fault codes
P2628
High voltage detected in air fuel ratio (AFR) sensor
Honda
Fuel and Air Metering
High severity
P2631
High voltage detected in air fuel ratio (AFR) sensor
Honda
Fuel and Air Metering
High severity
P2649
High voltage detected in engine VTEC solenoid valve circuit
Honda
Fuel and Air Metering
High severity
U101D
Internal malfunction detected in Steering control module
Audi
Communication Network System
High severity
U101D
Internal malfunction detected in Steering control module
Skoda
Communication Network System
High severity
U0103
Internal malfunction detected in Gear shift control module
Mercedes Benz
Communication Network System
High severity
U0105
Internal malfunction detected in Fuel injector control module
Mercedes Benz
Communication Network System
High severity
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