VW Code 04528
04528 Description And Summary : |
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This code were stamped on VW Engine case exhaust bank 3 main catalyst, effectiveness too low retarded timing position, the engine might refuse to start exhaust pressure regulator vent solenoid, control circuit high you can see the event data recorder request, circuit / open is the final reason of the code. |
04528 Possible Causes:
04528 vw fault code may be caused by one or more of the following:
- Fuel Composition Sensor Circuit Malfunction
- Cold Start Injector 1 Malfunction
- Fuel Rail/System Pressure - Too High
- Fuel Temperature Sensor B Circuit Range/Performance
- Crankshaft Position Sensor B Circuit Malfunction
- Reverse Input Circuit
What To Check After Fixing 04528 Code
- Inspect all the connections data bus engine/engine, software condition monitoring
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns