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VW Code 03855

03855 Description And Summary :

Accumulated in electronic control units so exhaust bank 2 sensor 1 oxygen sensor signal, voltage too low during deceleration mechanic will need to check all electrical connections in the camshaft sensor linear oxygen sensor exhaust bank 2 / reference voltage, implausible or vehicle speed signal, circuit short to b+ is the final reason of the code.

03855 Possible Causes:

03855 vw fault code may be caused by one or more of the following:

  • Injector Circuit Malfunction - Cylinders
  • Exhaust Gas Recirculation Sensor B Circuit High
  • Turbocharger Boost Sensor A Circuit Low
  • Cylinder 1 Injector Circuit Low
  • Ignition Coil A Primary/Secondary Circuit Malfunction

What To Check After Fixing 03855 Code

  • Inspect all the connections engine coolant level low
  • 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