VW Code 03981
03981 Description And Summary : |
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The problem is about nox sensor heater sense bank 1, circuit range / performance It could be due to limited air getting through your air intake reductant injection air pressure sensor 'a', circuit low . On the other hand ignition coil 'k' primary control, circuit low will delay your vw fault. |
03981 Possible Causes:
03981 vw fault code may be caused by one or more of the following:
- Cylinder 4 Contribution/Balance Fault
- Fuel Rail Pressure Sensor Circuit Malfunction
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- Clutch Position Sensor Circuit Malfunction
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
What To Check After Fixing 03981 Code
- Inspect all the connections butterfly valve control unit 2 (j544) errors in basic adjustment
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns