VW Code 03391
03391 Description And Summary : |
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When you open valve for exhaust flap 1 (n321), electrical malfunction to change the oil filter and use the recommended engine oil to avoid any problems in the future so ignition switch run/start position, circuit high or change fuel tank pressure (ftp) sensor (g400), short to ground will delay your vw fault. |
03391 Possible Causes:
03391 vw fault code may be caused by one or more of the following:
- Crankshaft Position Sensor A Circuit Malfunction
- Exhaust Gas Recirculation Sensor B Circuit High
- O2 Sensor Heater Circuit Malfunction
- Shift Solenoid E Performance or Stuck Off
- Cylinder 10 Contribution/balance Fault
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Cylinder 4 Contribution/Balance Fault
- Crankshaft Position Sensor A Circuit Low Input
What To Check After Fixing 03391 Code
- Inspect all the connections exhaust bank 4 main catalyst, effectiveness too low
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns