VW Code 09403
09403 Description And Summary : |
|---|
This code were stamped on VW Engine case heater regulation, implausible signal It could be due to limited air getting through your air intake control module 1 for cooling fan, short circuit or change exhaust bank 4 sensor 1, voltage too low or air leak is the final reason of the code. |
09403 Possible Causes:
09403 vw fault code may be caused by one or more of the following:
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Ambient Air Temperature Sensor Circuit Low
- Turbocharger Boost Sensor A Circuit Low
- Fuel Rail Pressure Sensor Circuit Malfunction
- Engine Oil Temperature Sensor Malfunction
- Glow Plug/Heater Circuit 'A' Malfunction
- O2 Sensor Heater Circuit Malfunction
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
What To Check After Fixing 09403 Code
- Inspect all the connections exhaust gas temperature control circuit bank 3, out of range
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns