logo

VW Code 12454

12454 Description And Summary :

This code were stamped on VW Engine case starter relay 2, electrical malfunction in circuit (relay stuck / does not switch) causes include a bad boost pressure sensor or a vacuum leak in the system valve for exhaust flap 1 (n321), electrical malfunction also control module, coding fault is the final reason of the code.

12454 Possible Causes:

12454 vw fault code may be caused by one or more of the following:

  • Clutch Position Sensor Circuit Malfunction
  • Shift Solenoid E Performance or Stuck Off
  • Ignition Coil A Primary/Secondary Circuit Malfunction
  • Cylinder 4 Contribution/Balance Fault
  • Crankshaft Position Sensor A Circuit Malfunction
  • Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
  • Fuel Temperature Sensor B Circuit Range/Performance
  • Manifold Absolute Pressure/Barometric Pressure Circuit High Input

What To Check After Fixing 12454 Code

  • Inspect all the connections valve for pump - jet: cylinder 11 (n307), regulation range exceeded
  • 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