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
P1484
Secondary Air Injection Pump Relay 2 Electrical Circuit Malfunction
Nissan
Auxiliary Emissions Control
Medium severity
P042F
Exhaust Gas Recirculation A Control Stuck Closed
Generic
Auxiliary Emissions Control
Medium severity
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