Engine-Codes - Gmc - P0B09 GMC

P0B09 GMC Code - Auxiliary Transmission Fluid Pump Supply Voltage Relay Control Circuit

- Code Popularity: 280 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents

|What are the Possible Causes of the P0B09 GMC Code?

  • Faulty Starter Generator Control Module
  • Starter Generator Control Module harness is open or shorted
  • Starter Generator Control Module circuit poor electrical connection

|How to Fix the P0B09 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 P0B09 GMC code?

Labor: 1.0

The cost to diagnose the P0B09 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.

|What are P0B09 GMC code possible symptoms?

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

|What Does the P0B09 GMC Code Mean?

The generator control module also called the starter generator control module is comprised of the following three control modules; the hybrid powertrain control module, 14 volt power module and the drive motor control module. These three control modules are non serviceable and are part of the generator control module.
The transmission fluid pump - auxiliary is used to maintain transmission fluid line pressure to the transmission during Autostop mode. The transmission fluid pump - auxiliary is externally mounted to the transmission case assembly. The hybrid powertrain control module controls the auxiliary pump by providing the ground path to the transmission pump relay - auxiliary coil control circuit.

Auxiliary Transmission Fluid Pump Supply Voltage Relay Control Circuit

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