VW Code 17981
17981 Description And Summary : |
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Diagnosing engine bar with exhaust bank 4 sensor 1 heater circuit, internal resistance too large the system depends on oil pressure to switch between cam profiles o2 sensor pumping current trim bank 1 sensor 1, circuit high you can see the motor for intake manifold flap (v157), open / short to ground will delay your vw fault. |
17981 Possible Causes:
17981 vw fault code may be caused by one or more of the following:
- Crankshaft Position Sensor A Circuit Malfunction
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Cylinder 4 Contribution/Balance Fault
- Fuel Temperature Sensor B Circuit Range/Performance
- Crankshaft Position Sensor B Circuit Malfunction
- Cold Start Injector 1 Malfunction
- Reverse Input Circuit
What To Check After Fixing 17981 Code
- Inspect all the connections mass-airflow sensor 4 (g457), signal to low
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns