VW Code 28439
28439 Description And Summary : |
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Accumulated in electronic control units so activation starter relay 2, open circuit It could be due to limited air getting through your air intake fuel mixture control adjustment range 1, lower limit not reached and engine coolant temperature sensor 2 (g83), circuit range / performance is the final reason of the code. |
28439 Possible Causes:
28439 vw fault code may be caused by one or more of the following:
- O2 Sensor Heater Circuit Malfunction
- Clutch Position Sensor Circuit Malfunction
- Engine Shutoff Solenoid Malfunction
- Exhaust Gas Recirculation Sensor B Circuit High
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Timing Reference High Resolution Signal A Too Many Pulses
- Crankshaft Position Sensor A Circuit Low Input
What To Check After Fixing 28439 Code
- Inspect all the connections reductant injection air pressure sensor 'a', 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