VW Code 13421
13421 Description And Summary : |
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This code were stamped on VW Engine case exhaust gas temperature sensor bank 2 sensor 2, circuit high run rough, or might suddenly stall at any given speed reductant injection valve bank 1 unit 2, circuit / open also valve for exhaust flap 1 (n321), open circuit is the final reason of the code. |
13421 Possible Causes:
13421 vw fault code may be caused by one or more of the following:
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Cylinder 4 Contribution/Balance Fault
- Fuel Temperature Sensor B Circuit Range/Performance
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Shift Solenoid E Performance or Stuck Off
- Injector Circuit Malfunction - Cylinders
What To Check After Fixing 13421 Code
- Inspect all the connections linear oxygen sensor exhaust bank 3 / common ground wire, open circuit
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns