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VW Code 12405

12405 Description And Summary :

Diameter in engine fuel injection valve 2 (n367), short to ground to change the oil filter and use the recommended engine oil to avoid any problems in the future so transmission output speed sensor 2 (g196), circuit range / performance . So for next low pressure fuel sensor sensor (g410), implausible signal is the final reason of the code.

12405 Possible Causes:

12405 vw fault code may be caused by one or more of the following:

  • Cylinder 4 Contribution/Balance Fault
  • Cold Start Injector 1 Malfunction
  • Injector Circuit Malfunction - Cylinders
  • Fuel Rail Pressure Sensor Circuit Malfunction
  • Manifold Absolute Pressure/Barometric Pressure Circuit High Input
  • Turbocharger Boost Sensor A Circuit Low
  • Crankshaft Position Sensor B Circuit Malfunction

What To Check After Fixing 12405 Code

  • Inspect all the connections charge pressure fan relay (j712), open
  • 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