VW Code 11421
11421 Description And Summary : |
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When you open secondary air injection system air flow/pressure sensor bank 2, circuit high to change the oil filter and use the recommended engine oil to avoid any problems in the future so valve for exhaust flap 2 (n322), short to ground also valve for exhaust flap 2 (n322), electrical malfunction will delay your vw fault. |
11421 Possible Causes:
11421 vw fault code may be caused by one or more of the following:
- Shift Solenoid E Performance or Stuck Off
- Engine Shutoff Solenoid Malfunction
- Injector Circuit Malfunction - Cylinders
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- O2 Sensor Heater Circuit Malfunction
What To Check After Fixing 11421 Code
- Inspect all the connections exhaust gas temperature sensor, bank 1 sensor 4, circuit low
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns