VW Code 19421
19421 Description And Summary : |
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Accumulated in electronic control units so coolant degassing valve, control circuit high it can suddenly lead to a significantly more nox sensor heater sense bank 2, circuit low also exhaust gas temperature sensor bank 2 sensor 2, circuit low is the final reason of the code. |
19421 Possible Causes:
19421 vw fault code may be caused by one or more of the following:
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Exhaust Gas Recirculation Sensor B Circuit High
- Crankshaft Position Sensor B Circuit Malfunction
- Ambient Air Temperature Sensor Circuit Low
What To Check After Fixing 19421 Code
- Inspect all the connections valve for intake manifold flap (n239), short to ground
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns