Engine-Codes - Buick - P0BC8 BUICK

P0BC8 BUICK - Hybrid/EV Battery Pack Cooling Fan Performance

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

P0BC8 BUICK Possible Causes

  • 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 do I fix code P0BC8 BUICK?

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 P0BC8 BUICK code

Labor: 1.0

The cost of diagnosing the P0BC8 BUICK code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

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

P0BC8 BUICK Meaning

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.

P0BC8 BUICK More Information

Need more information on how to fix the P0BC8 BUICK code?
Get Access to Factory Service Manuals

Need more help?

Get the P0bc8 Buick code diagnosed by a professional: Find a repair shop in your area