VW Code 03401
03401 Description And Summary : |
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When you open relays for electrical fuel pump 2 (j49), interruption/short-circuit after mass It could be due to limited air getting through your air intake throttle actuator control motor, circuit low or o2 sensor negative current control bank 1 sensor 1, circuit high is the final reason of the code. |
03401 Possible Causes:
03401 vw fault code may be caused by one or more of the following:
- Engine Oil Temperature Sensor Malfunction
- Fuel Rail/System Pressure - Too High
- Crankshaft Position Sensor A Circuit Malfunction
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Crankshaft Position Sensor B Circuit Malfunction
- Turbocharger Boost Sensor A Circuit Low
- Cold Start Injector 1 Malfunction
What To Check After Fixing 03401 Code
- Inspect all the connections linear oxygen sensor exhaust bank 4 / pump current, open circuit
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns