Engine-Codes - GMC - P0A85 GMC

P0A85 GMC Code - Hybrid/EV Battery Pack Cooling Fan Control Circuit High Voltage

- Code Popularity: 317 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents

|What are the Possible Causes of the Code P0A85 GMC?

  • Faulty Hybrid/EV Battery Pack Cooling Fan
  • Hybrid/EV Battery Pack Cooling Fan harness is open or shorted
  • Hybrid/EV Battery Pack Cooling Fan circuit poor electrical connection
  • Faulty Starter/Generator Control Module

|How to Fix the P0A85 GMC Code?

Start by checking 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.

|What is the Cost to Diagnose the Code P0A85 GMC?

Labor: 1.0

The cost to diagnose the P0A85 GMC code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

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|What are Code P0A85 GMC Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|What Does the P0A85 GMC Code Mean?

The hybrid/EV battery pack cooling fan draws air through the hybrid/EV battery pack to control the temperature of the hybrid/EV battery pack. To operate, the cooling fan receives an enable signal from the starter/generator control module. The enable control is controlled by a discrete high side driver in the starter/generator control module. When the enable control circuit is high, the fan will be enabled. The fan speed is controlled by a fan control circuit from the starter/generator control module, by changing the duty cycle. The maximum fan speed is 3900 RPM. Hybrid/EV battery pack cooling fan enable circuit open and short to voltage diagnostics run continuously until hybrid/EV battery pack cooling fan is enabled to run while short to ground runs after it is enabled to run. These diagnostics detect and report a failure of the fan to enable circuits.

P0A85 GMC Code - Hybrid/EV Battery Pack Cooling Fan Control Circuit High Voltage

|Need more Information on the P0A85 GMC Code?

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|Need Help with the P0A85 GMC Code?

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