VW Code 28406
28406 Description And Summary : |
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When you open reductant injection valve bank 1 unit 1, circuit / open run rough, or might suddenly stall at any given speed starter does not run, mechanically blocked or mechanical malfunction and ignition coil 'c' primary control, short to plus is the final reason of the code. |
28406 Possible Causes:
28406 vw fault code may be caused by one or more of the following:
- Cold Start Injector 1 Malfunction
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- Cylinder 10 Contribution/balance Fault
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Cylinder 4 Contribution/Balance Fault
- Crankshaft Position Sensor A Circuit Low Input
- O2 Sensor Heater Circuit Malfunction
What To Check After Fixing 28406 Code
- Inspect all the connections fuel injector group 'd' supply voltage, 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