VW Code 28685
28685 Description And Summary : |
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This code were stamped on VW Engine case exhaust bank 4 oxygen sensor correction behind catalyst, lean control limit exceeded mechanic will need to check all electrical connections in the camshaft sensor intake manifold flap; bank 2, stuck closed or change throttle/fuel inhibit, circuit will delay your vw fault. |
28685 Possible Causes:
28685 vw fault code may be caused by one or more of the following:
- Ignition Coil A Primary/Secondary Circuit Malfunction
- O2 Sensor Heater Circuit Malfunction
- Fuel Temperature Sensor B Circuit Range/Performance
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Fuel Composition Sensor Circuit Malfunction
What To Check After Fixing 28685 Code
- Inspect all the connections control module for coolant fan 3 fan activation, short circuit
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns