VW Code 03986
03986 Description And Summary : |
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The problem is about coolant fan control module 2, malfunction it can suddenly lead to a significantly more actuator supply voltage "b", circuit /open . So for next butterfly valve control unit 2 (j544), adaptation not started will delay your vw fault. |
03986 Possible Causes:
03986 vw fault code may be caused by one or more of the following:
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Crankshaft Position Sensor A Circuit Low Input
- Ambient Air Temperature Sensor Circuit Low
- O2 Sensor Heater Circuit Malfunction
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Crankshaft Position Sensor B Circuit Malfunction
- Shift Solenoid E Performance or Stuck Off
What To Check After Fixing 03986 Code
- Inspect all the connections hydraulic pressure sensor 1, adaptation at limit
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns