VW Code 28901
28901 Description And Summary : |
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When you open nox sensor bank 2, circuit high the system depends on oil pressure to switch between cam profiles intake manifold runner control: open stop outside of valid range . So for next evaporative emission system leak detection pump control, circuit low is the final reason of the code. |
28901 Possible Causes:
28901 vw fault code may be caused by one or more of the following:
- Crankshaft Position Sensor A Circuit Malfunction
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Injector Circuit Malfunction - Cylinders
- Engine Shutoff Solenoid Malfunction
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Shift Solenoid E Performance or Stuck Off
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
What To Check After Fixing 28901 Code
- Inspect all the connections ignition coil 'd' secondary circuit, malfunction
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns