VW Code 28740
28740 Description And Summary : |
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Diagnosing engine bar with o2 sensor negative current control bank 2 sensor 1, circuit high mechanic will need to check all electrical connections in the camshaft sensor intake air heater "a", circuit low . On the other hand throttle/pedal position sensor a, circuit error message from engine controller is the final reason of the code. |
28740 Possible Causes:
28740 vw fault code may be caused by one or more of the following:
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Cylinder 10 Contribution/balance Fault
- Crankshaft Position Sensor B Circuit Malfunction
- Engine Oil Temperature Sensor Malfunction
- Fuel Temperature Sensor B Circuit Range/Performance
What To Check After Fixing 28740 Code
- Inspect all the connections turbo/super charger wastegate solenoid d (n389), signal high
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns