VW Code 28709
28709 Description And Summary : |
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Diagnosing engine bar with fuel pressure regulator 2 control circuit high the system depends on oil pressure to switch between cam profiles torque management feedback signal "a", high . So for next oxygen (lambda) sensor b2 s3, signal shorted to heater circuit will delay your vw fault. |
28709 Possible Causes:
28709 vw fault code may be caused by one or more of the following:
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Clutch Position Sensor Circuit Malfunction
- Crankshaft Position Sensor B Circuit Malfunction
- Crankshaft Position Sensor A Circuit Low Input
- Engine Oil Temperature Sensor Malfunction
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Cylinder 4 Contribution/Balance Fault
What To Check After Fixing 28709 Code
- Inspect all the connections engine coolant temperature signal, open / short to b+
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns