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
P1381
Misfire Detected - No Communication with Brake Control Module
Volkswagen
Ignition System
High severity
P1390
Wheel Speed Sensor 1 G-Sensor Circuit
Volkswagen
Vehicle Speed and Idle Control System
High severity
P1397
Wheel Speed Sensor 2 G-Sensor Circuit Low Voltage
Volkswagen
Vehicle Speed and Idle Control System
High severity
P1400
EGR Valve Power Stage Circuit Electrical Malfunction
Volkswagen
Auxiliary Emissions Control
Medium severity
P1406
EGR Temperature Sensor Signal Range Performance
Volkswagen
Auxiliary Emissions Control
Medium severity
P1409
Tank Ventilation Valve Circuit Electrical Malfunction
Volkswagen
Auxiliary Emissions Control
Medium severity
P1413
EGR Differential Pressure Sensor Signal Too High
Volkswagen
Auxiliary Emissions Control
Medium severity
P1420
Secondary Air Injection Control Module Electrical Malfunction
Volkswagen
Auxiliary Emissions Control
Medium severity
P1422
Secondary Air Injection Valve Circuit Short To B
Volkswagen
Auxiliary Emissions Control
Medium severity
P1427
Brake System Vacuum Pump Activation Short To Positive
Volkswagen
Vehicle Speed and Idle Control System
Low severity
P1430
Brake System Vacuum Pump Activation Open Circuit/Short To Positive
Volkswagen
Vehicle Speed and Idle Control System
Low severity
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