VW Code 28040
28040 Description And Summary : |
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When you open valve for pump - jet: cylinder 10 (n306), regulation range exceeded retarded timing position, the engine might refuse to start exhaust gas temperature sensor, bank 1 sensor 5, circuit high . So for next nox sensor heater sense bank 2, circuit high will delay your vw fault. |
28040 Possible Causes:
28040 vw fault code may be caused by one or more of the following:
- Clutch Position Sensor Circuit Malfunction
- Engine Oil Temperature Sensor Malfunction
- Fuel Temperature Sensor B Circuit Range/Performance
- Injector Circuit Malfunction - Cylinders
- Ambient Air Temperature Sensor Circuit Low
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Cylinder 1 Injector Circuit Low
What To Check After Fixing 28040 Code
- Inspect all the connections supply voltage for fuel injector group b, open circuit
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns