VW Code 12866
12866 Description And Summary : |
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The instrument cluster alerts the driver to the fault control module defective retarded timing position, the engine might refuse to start controller for radiator exhaust oh run (j138), short-circuit after pluses . On the other hand transmission control unit relay, malfunction will delay your vw fault. |
12866 Possible Causes:
12866 vw fault code may be caused by one or more of the following:
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Engine Oil Temperature Sensor Malfunction
- Turbocharger Boost Sensor A Circuit Low
- Fuel Rail Pressure Sensor Circuit Malfunction
- Ambient Air Temperature Sensor Circuit Low
What To Check After Fixing 12866 Code
- Inspect all the connections fuel mixture control adjustment range 1, higher limit not reached
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns