P1F59 CHEVROLET - 14 Volt Power Module Status Terminal Circuit Performance
- Faulty 14 Volt Power Module
- 14 Volt Power Module harness is open or shorted
- 14 Volt Power Module circuit poor electrical connection
Tech notesThere is a factory service bulletin for the 2016-2017 Volt. The factory recommends check for open fuse.
"This concern may be caused by an open 15 Amp fuse in the High Voltage Battery Disconnect Relay Assembly on the front part of the High Voltage Battery. If you experience one or more of the conditions above, check for an open 15A fuse in the Battery Disconnect Relay Assembly."
- Engine Light ON (or Service Engine Soon Warning Light)
P1f59 Chevrolet DescriptionThe 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.
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