VW Code 03391
03391 Description And Summary : |
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When you open exhaust bank 3 sensor 1 oxygen sensor signal, voltage too low during deceleration causes include a bad boost pressure sensor or a vacuum leak in the system post catalyst fuel trim system, low limit . So for next valve for pump - jet, cylinder 1 (n240), electrical malfunction is the final reason of the code. |
03391 Possible Causes:
03391 vw fault code may be caused by one or more of the following:
- Crankshaft Position Sensor B Circuit Malfunction
- Fuel Rail/System Pressure - Too High
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Injector Circuit Malfunction - Cylinders
- Engine Oil Temperature Sensor Malfunction
- Clutch Position Sensor Circuit Malfunction
- Shift Solenoid E Performance or Stuck Off
- Cylinder 1 Injector Circuit Low
What To Check After Fixing 03391 Code
- Inspect all the connections valve for pump - jet: cylinder 10 (n306), range / performance
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns