OBDII Code List

P1F59 SATURN - 14 Volt Power Module Status Terminal Circuit Performance

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)

P1f59 Saturn 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 P1f59 Saturn - 14 Volt Power Module Status Terminal Circuit Performance -

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