VW Code 28866
28866 Description And Summary : |
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Diagnosing engine bar with o2 sensor reference voltage bank 2 sensor 1, circuit / open It could be due to limited air getting through your air intake nox sensor heater control bank 1, circuit high or change pressure control solenoid 5 (n233) short to b+ is the final reason of the code. |
28866 Possible Causes:
28866 vw fault code may be caused by one or more of the following:
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Timing Reference High Resolution Signal A Too Many Pulses
- Clutch Position Sensor Circuit Malfunction
- O2 Sensor Heater Circuit Malfunction
- Glow Plug/Heater Circuit 'A' Malfunction
- Engine Shutoff Solenoid Malfunction
What To Check After Fixing 28866 Code
- Inspect all the connections control of valves pump / nozzle, electrical errors in the electric circuit
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns