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VW Code 12033

12033 Description And Summary :

Diagnosing engine bar with ignition switch run/start position, circuit causes include a bad boost pressure sensor or a vacuum leak in the system hydraulic actuator position sender (g302), implausible signal . On the other hand post catalyst fuel trim system, low limit is the final reason of the code.

12033 Possible Causes:

12033 vw fault code may be caused by one or more of the following:

  • Cold Start Injector 1 Malfunction
  • Engine Shutoff Solenoid Malfunction
  • Timing Reference High Resolution Signal A Too Many Pulses
  • Fuel Composition Sensor Circuit Malfunction
  • Glow Plug/Heater Circuit 'A' Malfunction

What To Check After Fixing 12033 Code

  • Inspect all the connections supply voltage for fuel injector group b, short to ground
  • 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