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VW Code 12433

12433 Description And Summary :

Diagnosing engine bar with exhaust bank 3 oxygen sensor before catalyst, heater circuit, regulation at upper limit causes include a bad boost pressure sensor or a vacuum leak in the system pressure control solenoid 6 (n371) short to b+ or change linear oxygen sensor exhaust bank 3 / reference voltage, implausible will delay your vw fault.

12433 Possible Causes:

12433 vw fault code may be caused by one or more of the following:

  • Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
  • Cylinder 1 Injector Circuit Low
  • Engine Oil Temperature Sensor Malfunction
  • Ignition/Distributor Engine Speed Input Circuit Malfunction

What To Check After Fixing 12433 Code

  • Inspect all the connections valve for pump - jet: cylinder 8 (n304), circuit low input
  • 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