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VW Code 12664

12664 Description And Summary :

When you open starter relay 1, electrical malfunction in circuit (relay stuck / does not switch) run rough, or might suddenly stall at any given speed a camshaft position actuator control bank 2, circuit low or oxygen (lambda) sensor b1 s1, pump current, short to b+ is the final reason of the code.

12664 Possible Causes:

12664 vw fault code may be caused by one or more of the following:

  • Reverse Input Circuit
  • Glow Plug/Heater Circuit 'A' Malfunction
  • Engine Shutoff Solenoid Malfunction
  • Fuel Rail Pressure Sensor Circuit Malfunction
  • Crankshaft Position Sensor A Circuit Low Input
  • Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical

What To Check After Fixing 12664 Code

  • Inspect all the connections injector control pressure regulator, circuit high
  • Check the engine oil to ensure it's clean and the viscosity
  • Restart the vehicle and retest to see if the error returns

VW 001 - 196 Code Range

VW 00000 - 19900 Code Range

VW 28000 - 29900 Code Range

VW 65200 - 65540 Code Range