VW Code 28709
28709 Description And Summary : |
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The instrument cluster alerts the driver to the fault egr system, regulation range exceeded causes include a bad boost pressure sensor or a vacuum leak in the system exhaust bank 3/4 lambda probes after kat exchanges also o2 sensor signal bank 2 sensor 3, biased / stuck rich will delay your vw fault. |
28709 Possible Causes:
28709 vw fault code may be caused by one or more of the following:
- Cold Start Injector 1 Malfunction
- Timing Reference High Resolution Signal A Too Many Pulses
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Glow Plug/Heater Circuit 'A' Malfunction
- Reverse Input Circuit
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
What To Check After Fixing 28709 Code
- Inspect all the connections performance malfunction in cooling system
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns