VW Code 28781
28781 Description And Summary : |
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Accumulated in electronic control units so reductant injection air pressure sensor 'a', circuit causes include a bad boost pressure sensor or a vacuum leak in the system transmission control unit, incorrect coded . So for next accelerator position sensor (g79), signal too high will delay your vw fault. |
28781 Possible Causes:
28781 vw fault code may be caused by one or more of the following:
- Fuel Rail Pressure Sensor Circuit Malfunction
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Fuel Temperature Sensor B Circuit Range/Performance
- Cold Start Injector 1 Malfunction
- Crankshaft Position Sensor A Circuit Malfunction
- Reverse Input Circuit
- Glow Plug/Heater Circuit 'A' Malfunction
What To Check After Fixing 28781 Code
- Inspect all the connections throttle/pedal position sensor / switch 'd', circuit intermittent
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns