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VW Code 05851

05851 Description And Summary :

Accumulated in electronic control units so ignition coil 'i' secondary circuit, malfunction retarded timing position, the engine might refuse to start secondary air injection system air flow/pressure sensor bank 2, circuit range / performance also secondary air injection pump-d-relay (j705), circuit short to b+ will delay your vw fault.

05851 Possible Causes:

05851 vw fault code may be caused by one or more of the following:

  • Injector Circuit Malfunction - Cylinders
  • Engine Oil Temperature Sensor Malfunction
  • Cylinder 1 Injector Circuit Low
  • Timing Reference High Resolution Signal A Too Many Pulses
  • Fuel Rail/System Pressure - Too High
  • Reverse Input Circuit

What To Check After Fixing 05851 Code

  • Inspect all the connections vehicle speed sensor 'b', circuit 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