VW Code 28998
28998 Description And Summary : |
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The problem is about direct ozone reduction catalyst deterioration sensor, circuit high mechanic will need to check all electrical connections in the camshaft sensor mass-airflow sensor 3 (g456), signal to high or diesel particulate filter pressure sensor 'a', circuit is the final reason of the code. |
28998 Possible Causes:
28998 vw fault code may be caused by one or more of the following:
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Injector Circuit Malfunction - Cylinders
- Glow Plug/Heater Circuit 'A' Malfunction
- Reverse Input Circuit
- Cylinder 10 Contribution/balance Fault
- Crankshaft Position Sensor B Circuit Malfunction
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
What To Check After Fixing 28998 Code
- Inspect all the connections data bus powertrain, no communication
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns