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
P0432
Main Catalyst Efficiency Below Threshold Bank 2
Generic
Auxiliary Emissions Control
Medium severity
P0435
Catalyst Temperature Sensor Circuit Bank 2 Sensor 1
Generic
Auxiliary Emissions Control
Medium severity
P0438
Catalyst Temperature Sensor High Input Bank 2 Sensor 1
Generic
Auxiliary Emissions Control
Medium severity
P0441
Evaporative Emission Control System Incorrect Purge Flow
Generic
Auxiliary Emissions Control
Low severity
P0444
Evaporative Emission Control System Purge Control Valve Circuit Open
Generic
Auxiliary Emissions Control
Low severity
P0447
Evaporative Emission Control System Vent Control Circuit Open
Generic
Auxiliary Emissions Control
Low severity
P0450
Evaporative Emission Control System Pressure Sensor Malfunction
Generic
Auxiliary Emissions Control
Low severity
P0453
Evaporative Emission Control System Pressure Sensor High Input
Generic
Auxiliary Emissions Control
Low severity
P0457
EVAP Control System Leak Detected Fuel Filler Cap Loose/Off
Generic
Auxiliary Emissions Control
Low severity
P0475
Exhaust Pressure Control Valve Malfunction
Generic
Auxiliary Emissions Control
Medium severity
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