VW Code 28786
28786 Description And Summary : |
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Staring in engine exhaust bank 4, sensor 1, tension too largely retarded timing position, the engine might refuse to start a/c refrigerant pressure sensor 'b', circuit low . On the other hand exhaust bank 4 sensor 1 heater circuit, open will delay your vw fault. |
28786 Possible Causes:
28786 vw fault code may be caused by one or more of the following:
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Shift Solenoid E Performance or Stuck Off
- Cylinder 10 Contribution/balance Fault
- Fuel Rail/System Pressure - Too High
- Fuel Composition Sensor Circuit Malfunction
- Ignition Coil A Primary/Secondary Circuit Malfunction
What To Check After Fixing 28786 Code
- Inspect all the connections power supply, voltage low voltage
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns