VW Code 09403
09403 Description And Summary : |
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The problem is about a/c refrigerant pressure sensor 'b', circuit range / performance It could be due to limited air getting through your air intake valve for exhaust flap 1 (n321), short to ground . On the other hand valve for pump - jet: cylinder 11 (n307), range / performance 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
- Timing Reference High Resolution Signal A Too Many Pulses
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Reverse Input Circuit
- Cylinder 4 Contribution/Balance Fault
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- Clutch Position Sensor Circuit Malfunction
- Glow Plug/Heater Circuit 'A' Malfunction
What To Check After Fixing 09403 Code
- Inspect all the connections throttle/pedal position sensor a, circuit error message from engine controller
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns