VW Code 11421
11421 Description And Summary : |
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Diameter in engine turbo/super charger, under-boost condition run rough, or might suddenly stall at any given speed exhaust bank 4 sensor 1, voltage too low or air leak . On the other hand data bus powertrain, no message from transmission controller (tcu) is the final reason of the code. |
11421 Possible Causes:
11421 vw fault code may be caused by one or more of the following:
- Cylinder 10 Contribution/balance Fault
- Cylinder 4 Contribution/Balance Fault
- Glow Plug/Heater Circuit 'A' Malfunction
- Engine Oil Temperature Sensor Malfunction
- O2 Sensor Heater Circuit Malfunction
What To Check After Fixing 11421 Code
- Inspect all the connections please check dtc memory of adr control module
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns