about Autohex II Download forum contact

OBD II Fault Code P1F9B :

Description of Fault code P1F9B

CPCV (Cathode Pressure Control Valve) Angle Adjustment Error

Possible failuer P1F9B

  • Malfunctioning Valve (icing, dirt, trash)
  • MOT Drive Line M1 open-circuit/short-circuit fault
  • MOT Drive Line M2 open-circuit/short-circuit fault
  • MOT Drive Power Line IG open-circuit/short-circuit fault
  • Open-circuit of PGM to GND line
  • CPCV failure
  • FCCM failure

Diagnostic Procedure using AutoHex II Scan Tool

  • The rear average wheel speed > 15km/h and vehicle speed on the meter<1km/h
  • If the rear average wheel speed > 15km/h and VSP<1km/h lasts for 0.3 seconds, the malfunction is determined.

Test Conditions using AutoHex tester

  • Vehicle speed / wheel speed is normal
  • Brake is out of action
  • The automatic brake is out of action

Clear Fault codes Conditions

  • The rear average wheel speed > 15km/h and vehicle speed on the meter<1km/h
  • If the rear average wheel speed > 15km/h and VSP<1km/h lasts for 0.3 seconds, the malfunction is determined.

MIL Status

  • Glow ON

BMW Key Programming by HTag Pro, All keys lost


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 P1F9C
OBD II Fault Code P1F9D
OBD II Fault Code P1F9E
OBD II Fault Code P1F9F
OBD II Fault Code P1FA0
OBD II Fault Code P1FA1
OBD II Fault Code P1FA2
OBD II Fault Code P1FA3
OBD II Fault Code P1FA4
OBD II Fault Code P1FA5
Autohex II Reviews
Autohex II Reviews
Find out Autohex II user's impressions about using this tool for BMW advanced services
AutoHex II
AutoHex II
AutoHex II is your best choice to have full access to dealer functions like coding, adjusting and modules flashing/programming, Contact us for prices
AutoHex Forum
Scan Tool Forum
Join AutoHex Onboard Diagnostic Forum to share useful information about using onboard diagnostic functions and other tips
AutoHex II Autohex II For BMW AutoHex II For Kia and Hyundai AutoHex stand alone Mercedes Technical Info