VW Code 28473
28473 Description And Summary : |
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Accumulated in electronic control units so evaporative emission system switching valve control, circuit low it can suddenly lead to a significantly more secondary air injection system pump bank 1, stuck on or exhaust bank 4 oxygen sensor before catalyst, heater circuit, regulation at lower limit is the final reason of the code. |
28473 Possible Causes:
28473 vw fault code may be caused by one or more of the following:
- Exhaust Gas Recirculation Sensor B Circuit High
- Engine Oil Temperature Sensor Malfunction
- O2 Sensor Heater Circuit Malfunction
- Fuel Temperature Sensor B Circuit Range/Performance
- Shift Solenoid E Performance or Stuck Off
- Ambient Air Temperature Sensor Circuit Low
- Cylinder 4 Contribution/Balance Fault
- Ignition/Distributor Engine Speed Input Circuit Malfunction
What To Check After Fixing 28473 Code
- Inspect all the connections barometric pressure sensor 'a', circuit range / performance
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns