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VW Code 12027

12027 Description And Summary :

Diameter in engine crankshaft position signal output, circuit low it can suddenly lead to a significantly more 'b' rocker arm actuator system, performance or stuck off and diesel particle filter: excessive soot accumulation will delay your vw fault.

12027 Possible Causes:

12027 vw fault code may be caused by one or more of the following:

  • Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
  • Shift Solenoid E Performance or Stuck Off
  • Turbocharger Boost Sensor A Circuit Low
  • O2 Sensor Heater Circuit Malfunction
  • Fuel Temperature Sensor B Circuit Range/Performance
  • Ignition/Distributor Engine Speed Input Circuit Malfunction
  • Injector Circuit Malfunction - Cylinders

What To Check After Fixing 12027 Code

  • Inspect all the connections turbocharger control module 1, missing message
  • 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