Cadillac P1AC9: HCM Service Calibration Fault
Is your scanner showing Cadillac P1AC9?
No worries. We'll show you what it means and how to deal with it.
Cadillac P1AC9: HCM Service Calibration Fault
OVERVIEWWhat Does The Cadillac P1AC9 Code Mean?
Hybrid Control Module (HCM) The internal fault detection is handled inside the control module. No external circuits are involved.
What Are The Potential Causes Of The Cadillac P1AC9 Code?
- This DTC may be stored as a history DTC without affecting the operation of the module. If stored only as a history DTC and not retrieved as a current DTC, do not replace the module.
- If this DTC is retrieved as both a current and history DTC, reprogram the module.
Recommended Parts
Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:
>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> Replacement 5DV 009 000-00 Xenon HID Ballast Headlight Control Unit Module
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
Cadillac P1AC9, DTCDECODE.
