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OBD II Fault Code P1086 :

Description of Fault code P1086

FUEL RAIL PRESSURE CONTROL VALVE MALFUNCTION

Possible failuer P1086

  • Fuel Rail Pressure Control Valve open side stuck

Diagnostic Procedure using AutoHex II

  • The deviation of the FRP between the target and the actual is monitored.
  • The pump discharge quantity to achieve the target FRP is monitored.

Test Conditions using AutoHex tester

  • During the FRP control
  • The FRP control is normal
  • The request discharge rate < a specified value

Clear Fault codes Conditions

  • The deviation of the FRP between the target and the actual is monitored.
  • The pump discharge quantity to achieve the target FRP is monitored.

MIL Status

  • Check Engine Light ON

BMW Key Learning


Note:

  • AutoHex II is a professional Auto diagnostic.
  • This fault code is a GERENRIC fault code, some cars may change the meaning of this fault code.
    To get the accurate fault code description you may use AutoHex II

More Fault codes:

OBD II Fault Code P1087
OBD II Fault Code P1088
OBD II Fault Code P1089
OBD II Fault Code P108A
OBD II Fault Code P108B
OBD II Fault Code P108C
OBD II Fault Code P108D
OBD II Fault Code P108E
OBD II Fault Code P108F
OBD II Fault Code P1090
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