VW Code 11421
11421 Description And Summary : |
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When you open fuel cap sensor / switch, circuit high causes include a bad boost pressure sensor or a vacuum leak in the system evaporative emission system vent (n115), valve stuck open . On the other hand data bus powertrain, missing message from clutch control will delay your vw fault. |
11421 Possible Causes:
11421 vw fault code may be caused by one or more of the following:
- O2 Sensor Heater Circuit Malfunction
- Exhaust Gas Recirculation Sensor B Circuit High
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Cylinder 1 Injector Circuit Low
- Crankshaft Position Sensor A Circuit Low Input
What To Check After Fixing 11421 Code
- Inspect all the connections secondary air injection valve 3 (n384), circuit 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