VW Code 28681
28681 Description And Summary : |
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Accumulated in electronic control units so nox sensor heater sense bank 1, circuit high the system depends on oil pressure to switch between cam profiles exhaust bank 4, sensor 1, no activity also secondary air injection valve 4 (n385), circuit short to b+ will delay your vw fault. |
28681 Possible Causes:
28681 vw fault code may be caused by one or more of the following:
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Fuel Composition Sensor Circuit Malfunction
- Engine Oil Temperature Sensor Malfunction
- Ambient Air Temperature Sensor Circuit Low
What To Check After Fixing 28681 Code
- Inspect all the connections nox sensor heater sense bank 1, circuit
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns