logo

VW Code 12855

12855 Description And Summary :

Diagnosing engine bar with idle speed control throttle position, electrical malfunction retarded timing position, the engine might refuse to start control module defective . So for next ignition switch accessory position, circuit is the final reason of the code.

12855 Possible Causes:

12855 vw fault code may be caused by one or more of the following:

  • Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
  • Fuel Temperature Sensor B Circuit Range/Performance
  • Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
  • Ignition/Distributor Engine Speed Input Circuit Malfunction
  • Fuel Composition Sensor Circuit Malfunction

What To Check After Fixing 12855 Code

  • Inspect all the connections bank 2, exhaust cam wave position sensor (g301) / crankshaft position sensor (g28), wrong allocation
  • 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