VW Code 28851
28851 Description And Summary : |
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The problem is about o2 sensor reference voltage bank 2 sensor 1, circuit low mechanic will need to check all electrical connections in the camshaft sensor o2 sensor signal bank 1 sensor 1, biased / stuck rich . On the other hand starter activation, return message terminal 50, short to b+ is the final reason of the code. |
28851 Possible Causes:
28851 vw fault code may be caused by one or more of the following:
- Engine Oil Temperature Sensor Malfunction
- Ambient Air Temperature Sensor Circuit Low
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- O2 Sensor Heater Circuit Malfunction
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Cylinder 1 Injector Circuit Low
- Fuel Rail/System Pressure - Too High
- Exhaust Gas Recirculation Sensor B Circuit High
What To Check After Fixing 28851 Code
- Inspect all the connections diesel particulate filter regeneration frequency
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns