HCM Service Calibration Fault
Table of contents
P1AC9 CHEVROLET Possible Causes
- Faulty Hybrid Control Module (HCM)
- Hybrid Control Module (HCM) harness is open or shorted
- Hybrid Control Module (HCM) circuit poor electrical connection
How do I fix code P1AC9 CHEVROLET?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P1AC9 CHEVROLET code
The cost of diagnosing the P1AC9 CHEVROLET code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1AC9 CHEVROLET Description
Hybrid Control Module (HCM) The internal fault detection is handled inside the control module. No external circuits are involved.