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P1F5A BUICK

P1F5A BUICK - 14 Volt Power Module Status Terminal Circuit Low Voltage

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Faulty 14 Volt Power Module
  • 14 Volt Power Module harness is open or shorted
  • 14 Volt Power Module circuit poor electrical connection
  • Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)
  • P1f5a Buick Description

    The ECM uses two circuits to control and monitor the state of the 14V power module, often referred to as the accessory DC power control module.

    The status circuit functions much like the F Terminal circuit on a generator equipped vehicle. A high side driver in the 14V power module applies a duty cycled voltage to the ECM. The duty cycle indicates 14V power module internal temperature and operational condition. The ECM will detect faults on the 14V power module status circuit when the vehicle is ON.

    OBDII Code P1f5a Buick - 14 Volt Power Module Status Terminal Circuit Low Voltage - Autoodes.com

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    P1F5A BUICK Comments

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    Repair Importance Level: 3
     
    1=Low 2=Medium 3=High  
    Repair Difficulty Level: 3
     
    1=Easy 2=Moderate 3=Hard  

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