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
P1279
Air Fuel Ratio Sensor 1 Bank 1 Circuit Slow Response
Hyundai
Fuel and Air Metering
High severity
P1289
Cylinder Head Temperature Sensor Signal Greater Than Self-Test Range
Hyundai
Injector Circuit
High severity
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