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VW Code 12542

12542 Description And Summary :

This code were stamped on VW Engine case fuel mixture control adjustment range 2, lower limit not reached to change the oil filter and use the recommended engine oil to avoid any problems in the future so fuel injection valve 3 (n368), short to ground also ignition coil 'j' secondary circuit, malfunction is the final reason of the code.

12542 Possible Causes:

12542 vw fault code may be caused by one or more of the following:

  • Glow Plug/Heater Circuit 'A' Malfunction
  • Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
  • O2 Sensor Heater Circuit Malfunction
  • Reverse Input Circuit
  • Cylinder 4 Contribution/Balance Fault
  • Fuel Rail Pressure Sensor Circuit Malfunction
  • Manifold Absolute Pressure/Barometric Pressure Circuit High Input

What To Check After Fixing 12542 Code

  • Inspect all the connections reductant temperature sensor, circuit range / performance
  • 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