VW Code 03400
03400 Description And Summary : |
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This code were stamped on VW Engine case nox sensor heater sense bank 1, circuit range / performance mechanic will need to check all electrical connections in the camshaft sensor control module 2 for cooling fan, excess temperature . So for next exhaust pressure regulator vent solenoid, control circuit / open is the final reason of the code. |
03400 Possible Causes:
03400 vw fault code may be caused by one or more of the following:
- Crankshaft Position Sensor B Circuit Malfunction
- Cold Start Injector 1 Malfunction
- O2 Sensor Heater Circuit Malfunction
- Fuel Temperature Sensor B Circuit Range/Performance
- Fuel Rail/System Pressure - Too High
What To Check After Fixing 03400 Code
- Inspect all the connections exhaust gas temperature sensor, bank 1 sensor 5, circuit high
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns