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
P2474
Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 2 Sensor 4
Auxiliary Emissions Control
Medium severity
P2475
Exhaust Gas Temperature Sensor Circuit Low Bank 2 Sensor 4
Auxiliary Emissions Control
Medium severity
P2477
Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 2 Sensor 4
Auxiliary Emissions Control
Medium severity
P2567
Direct Ozone Reduction Catalyst Temp Sensor Circuit
Auxiliary Emissions Control
Medium severity
P2577
Direct Ozone Reduction Catalyst Efficiency Below Threshold
Auxiliary Emissions Control
Medium severity
P2631
O2 Sensor Pumping Current Trim Circuit High Bank2 Sensor 1
Fuel and Air Metering
Medium severity
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