VW Code 17921
17921 Description And Summary : |
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Diagnosing engine bar with exhaust gas temperature sensor 2 bank 1 (g448), low run rough, or might suddenly stall at any given speed reductant injection valve bank 1 unit 2, circuit low . So for next exhaust gas temperature sensor, bank 2 sensor 5, circuit range / performance is the final reason of the code. |
17921 Possible Causes:
17921 vw fault code may be caused by one or more of the following:
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- Reverse Input Circuit
- Crankshaft Position Sensor B Circuit Malfunction
- Cylinder 4 Contribution/Balance Fault
- Exhaust Gas Recirculation Sensor B Circuit High
- Fuel Temperature Sensor B Circuit Range/Performance
What To Check After Fixing 17921 Code
- Inspect all the connections please check dtc memory of transmission ecu
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns