VW Code 28506
28506 Description And Summary : |
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The problem is about o2 sensor signals swapped bank 1 sensor 2 / bank 1 sensor 3 the system depends on oil pressure to switch between cam profiles signal line for tiptronic: electrical malfunction . So for next minimum throttle position, not learned will delay your vw fault. |
28506 Possible Causes:
28506 vw fault code may be caused by one or more of the following:
- O2 Sensor Heater Circuit Malfunction
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Injector Circuit Malfunction - Cylinders
What To Check After Fixing 28506 Code
- Inspect all the connections intake manifold tuning (imt) valve position sensor / switch bank 1, circuit range / performance
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns