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
P2427
Exhaust Gas Recirculation Cooling Valve Ctrl Circuit High
Auxiliary Emissions Control
Medium severity
P2430
Sec Air Injector Sys Air Flow/Press Sensor Circuit Bank1
Auxiliary Emissions Control
Medium severity
P2432
Sec Air Injector Sys Air Flow/Press Sensor Circuit Low Bank1
Auxiliary Emissions Control
High severity
P2433
Sec Air Injector Sys Air Flow/Press Sensor Circuit High Bank1
Auxiliary Emissions Control
High severity
P2436
Sec Air Injector Sys Air Flow/Press Sensor Circuit Range/Performance Bank2
Auxiliary Emissions Control
High severity
P2437
Sec Air Injector Sys Air Flow/Press Sensor Circuit Low Bank2
Auxiliary Emissions Control
High severity
P2440
Sec Air Injector Sys Switching Valve Stuck Open Bank1
Auxiliary Emissions Control
High severity
P2441
Sec Air Injector Sys Switching Valve Stuck Closed Bank1
Auxiliary Emissions Control
High severity
P2443
Sec Air Injector Sys Switching Valve Stuck Closed Bank2
Auxiliary Emissions Control
High severity
P244C
Exhaust Temperature Too Low For Particulate Filter Regeneration Bank 1
Auxiliary Emissions Control
Medium severity
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