VW Code 28403
28403 Description And Summary : |
|---|
Staring in engine secondary air injection valve 4 (n385), circuit open circuit to change the oil filter and use the recommended engine oil to avoid any problems in the future so exhaust bank 3, probe 2 tension too small also control module 1 for cooling fan, excess temperature will delay your vw fault. |
28403 Possible Causes:
28403 vw fault code may be caused by one or more of the following:
- O2 Sensor Heater Circuit Malfunction
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Shift Solenoid E Performance or Stuck Off
- Reverse Input Circuit
What To Check After Fixing 28403 Code
- Inspect all the connections pressure control solenoid 1 (n215), electrical malfunction
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns