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
P0634
PCM/ECM (Engine Control Module) /TCM Internal Temperature A Too High
Generic
Computer Output Circuit
High severity
P0639
Throttle Actuator Control Range/Performance Bank 2
Generic
Computer Output Circuit
High severity
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