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
P0486
Exhaust Gas Recirculation Sensor B Circuit
Generic
Auxiliary Emissions Control
Medium severity
P0488
Exhaust Gas Recirculation Throttle Control Circuit A Range/Performance
Generic
Auxiliary Emissions Control
Medium severity
P0492
Secondary Air Injection System Insufficient Flow Bank 2
Generic
Auxiliary Emissions Control
High severity
P0498
Evaporative Emission System Vent Valve Control Circuit Low
Generic
Auxiliary Emissions Control
Low severity
P0501
Vehicle Speed Sensor A Range/Performance
Generic
Vehicle Speed and Idle Control System
High severity
P0509
Idle Air Control System Circuit High
Generic
Vehicle Speed and Idle Control System
High severity
P0516
Battery Temperature Sensor Circuit Low
Generic
Vehicle Speed and Idle Control System
High severity
P0520
Engine Oil Pressure Sensor/Switch Circuit Malfunction
Generic
Vehicle Speed and Idle Control System
High severity
P0523
Engine Oil Pressure Sensor/Switch Circuit High Voltage
Generic
Vehicle Speed and Idle Control System
High severity
P0531
A/C Refrigerant Pressure Sensor Circuit Range/Performance
Generic
Vehicle Speed and Idle Control System
Low severity
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