OBD II Fault Code P1F8D :

Description of Fault code P1F8D

Hydrogen Supply System Error (Level 1)

Possible failuer P1F8D

• Fuel Shut-off Solenoid Valve 1 remained closed
• Harness between Fuel Shut-off Solenoid Valve 1 to FCVSCM
• Failure of Fuel Pressure Regulator P1
• Failure of Regulator ASSY (Regulator, Shut-off Valve)
• Harness connecting Fuel Shut-off Solenoid Valve 2 and FCVSCM
• FSVSCM failure
• Fuel Circulation Pump nozzle fault
• Open-circuit of harness between Fuel Circulation Pump and FCCM
• Pressure Control Signal Line failure
• Fuel Pressure Control Valve remained open
• 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

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

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