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
P0038
HO2S Heater Control Circuit High Bank 1 Sensor 2
Generic
Fuel and Air Metering
Medium severity
P0039
Turbocharger Bypass Valve Control Circuit Range/Performance
Generic
Injector Circuit
High severity
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