VW Code 28977
28977 Description And Summary : |
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This code were stamped on VW Engine case valve for pump - jet: cylinder 8 (n304), regulation range exceeded retarded timing position, the engine might refuse to start throttle actuator control system, forced engine shutdown or change diesel particulate filter pressure sensor 'a', circuit is the final reason of the code. |
28977 Possible Causes:
28977 vw fault code may be caused by one or more of the following:
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- O2 Sensor Heater Circuit Malfunction
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
What To Check After Fixing 28977 Code
- Inspect all the connections turbocharger speed sensor, circuit high
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns