OBD II Fault Code P1F3F :

Description of Fault code P1F3F

BVCM Output-side Excess Voltage

Possible failuer P1F3F

• High Voltage Contactor (+,-) Drive Line, in the BM Contactor, short-circuit to GND
• Open-circuit of Cable connecting BM Contactor and BVCM
• BM Internal Circuit open-circuit
• BM Fusing
• A/C Fusing
• DC/DC Fusing
• Open-circuit of cable connecting FC/CM and BVCM
• DMPI Module failure (Boosting error)
• APMPI Module failure (DMPI Module to APMPI Module line open-circuit)
• FCVSCM 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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