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VW Code 12105

12105 Description And Summary :

Diameter in engine relays for pump, fuel cooling (j445), interruption/short-circuit after mass causes include a bad boost pressure sensor or a vacuum leak in the system hydraulic actuator position sender (g302), lower limit not reached . So for next secondary air injection valve 3 (n384), circuit short to b+ will delay your vw fault.

12105 Possible Causes:

12105 vw fault code may be caused by one or more of the following:

  • Crankshaft Position Sensor A Circuit Malfunction
  • Ambient Air Temperature Sensor Circuit Low
  • Exhaust Gas Recirculation Sensor B Circuit High
  • Cylinder 4 Contribution/Balance Fault
  • Crankshaft Position Sensor B Circuit Malfunction

What To Check After Fixing 12105 Code

  • Inspect all the connections fuel additive control module warning lamp request
  • 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