VW Code 28558
28558 Description And Summary : |
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Accumulated in electronic control units so o2 sensor reference voltage bank 2 sensor 1, circuit high causes include a bad boost pressure sensor or a vacuum leak in the system exhaust bank 4 oxygen sensor before catalyst, heater circuit, regulation at upper limit also fuel injection valve 4 (n369), short to ground is the final reason of the code. |
28558 Possible Causes:
28558 vw fault code may be caused by one or more of the following:
- Turbocharger Boost Sensor A Circuit Low
- Injector Circuit Malfunction - Cylinders
- Cold Start Injector 1 Malfunction
- Cylinder 4 Contribution/Balance Fault
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Fuel Composition Sensor Circuit Malfunction
What To Check After Fixing 28558 Code
- Inspect all the connections data-bus powertrain, implausible message from level control module (j197)
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns