VW Code 28486
28486 Description And Summary : |
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The instrument cluster alerts the driver to the fault nox sensor bank 1, circuit high It could be due to limited air getting through your air intake valve for pump - jet: cylinder 10 (n306), range / performance also reductant injection valve bank 2 unit 1, circuit high will delay your vw fault. |
28486 Possible Causes:
28486 vw fault code may be caused by one or more of the following:
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Fuel Composition Sensor Circuit Malfunction
- Fuel Rail/System Pressure - Too High
- Cylinder 4 Contribution/Balance Fault
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- Ignition/Distributor Engine Speed Input Circuit Malfunction
What To Check After Fixing 28486 Code
- Inspect all the connections oxygen (lambda) sensor b2 s1, signal shorted to heater circuit
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns