AutoCodes – GMC – P1BBF GMC

P1BBF GMC Code - Hybrid/Electric Vehicle Battery 73 Circuit High Voltage

Quick Answer

The Hybrid/Electric Vehicle battery pack contains 288 cells. Common causes include Faulty Hybrid/Electric Vehicle Battery Pack, Faulty Hybrid/Electric Vehicle Battery Interface Control Module. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P1BBF GMC indicates Hybrid/Electric Vehicle Battery 73 Circuit High Voltage.
Common causes: Common causes include Faulty Hybrid/Electric Vehicle Battery Pack, Faulty Hybrid/Electric Vehicle Battery Interface Control Module.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 792

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 12, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1BBF GMC Description

The Hybrid/Electric Vehicle battery pack contains 288 cells. Groups of three cells are welded together in parallel. There are a total of 96 cell groups in the hybrid/EV battery pack assembly. These cell groups are electrically connected in-series. Each individual cell group is rated at 3.7 V, for a nominal system voltage of 355 V direct current. The battery cells are also grouped together into three sections. The first 90 cells/30 cell groups make up battery section one. This section is adjacent to the cowl and contains batteries 67 through to 96. Battery section two is located behind section one. It is made up of 72 cells/24 cell groups and contains batteries 43 through to 66. The transverse battery section is section number three, it is made up of the remaining 126 cells/42 cell groups and contains batteries 1 through to 42. The three battery sections are individually serviceable components.
The battery energy control module monitors the voltage of the 96 battery cell groups through the four hybrid/EV battery interface control modules. Voltage sense circuits are attached to each individual cell group, and these sense circuits terminate at a connector located on the top surface of the battery section. A serviceable auxiliary battery wiring harness joins this connector to a hybrid/EV battery interface control module, also located on the top surface of the battery section. The hybrid/EV battery interface control module encodes the voltage reading and transmits it to the battery energy control module through the battery control harness. There is one hybrid/EV battery interface control module located on battery sections one and two, and two hybrid/EV battery interface control modules associated with battery section three. The hybrid/EV battery interface control module, battery energy control module wiring harness, auxiliary battery wiring harness, and battery energy control module are all considered serviceable components.
The battery energy control module will determine when a fault condition is present. Diagnostics and system status are communicated from the battery energy control module to hybrid/EV powertrain control module 2 through serial data. The hybrid/EV powertrain control module 2 is the host controller for diagnostic trouble code information.

OBDII Code P1BBF GMC - Hybrid/Electric Vehicle Battery 73 Circuit High Voltage - AutoCodes.com — P1BBF GMC Code - Hybrid/Electric Vehicle Battery 73 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1BBF GMC?

Faulty Hybrid/Electric Vehicle Battery Pack
Faulty Hybrid/Electric Vehicle Battery Interface Control Module

How to Fix the DTC P1BBF GMC?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1BBF GMC code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1BBF GMC Code

1. What are common symptoms of OBDII code P1BBF GMC related to the Hybrid/Electric Vehicle Battery 73 Circuit High Voltage?

- Common symptoms may include the illumination of the check engine light, reduced hybrid/electric vehicle performance, and potential issues with the battery system.

2. What are possible causes of OBDII code P1BBF GMC indicating Hybrid/Electric Vehicle Battery 73 Circuit High Voltage?

- Possible causes include faulty high voltage circuit wiring, damaged battery cells, issues with the battery management system, or a malfunctioning high voltage control module.

3. How can I diagnose OBDII code P1BBF GMC for the Hybrid/Electric Vehicle Battery 73 Circuit High Voltage?

- Diagnosis typically involves using a professional OBDII scanner to read the code, inspecting the high voltage circuit components, checking the battery system for any visible damage, and conducting a thorough electrical system test.

4. Is it safe to drive with OBDII code P1BBF GMC indicating Hybrid/Electric Vehicle Battery 73 Circuit High Voltage?

- It is not recommended to drive the vehicle with this code present, as it could lead to further damage to the high voltage system and potentially compromise the safety of the vehicle.

5. What are some repair tips for fixing OBDII code P1BBF GMC related to the Hybrid/Electric Vehicle Battery 73 Circuit High Voltage?

- Repair tips may include checking and repairing any damaged wiring, replacing faulty battery cells, recalibrating the battery management system, or reprogramming the high voltage control module as necessary.

6. Can I reset OBDII code P1BBF GMC for the Hybrid/Electric Vehicle Battery 73 Circuit High Voltage on my own?

- While you can clear the code with an OBDII scanner, it is crucial to address the underlying issue causing the code before resetting it to prevent further problems.

7. Are there any safety precautions to keep in mind when working on OBDII code P1BBF GMC related to the Hybrid/Electric Vehicle Battery 73 Circuit High Voltage?

- Safety precautions include wearing appropriate personal protective equipment, disconnecting the high voltage system properly, and following manufacturer guidelines for working on hybrid/electric vehicle components.

8. How much does it typically cost to repair OBDII code P1BBF GMC indicating Hybrid/Electric Vehicle Battery 73 Circuit High Voltage?

- Repair costs can vary depending on the specific issue causing the code, but it is advisable to consult with a professional mechanic or dealership for an accurate diagnosis and cost estimate.

9. Can a DIY enthusiast without specialized training fix OBDII code P1BBF GMC for the Hybrid/Electric Vehicle Battery 73 Circuit High Voltage?

- Due to the complexities of hybrid/electric vehicle systems and high voltage components, it is recommended to seek assistance from a qualified technician or dealership for proper diagnosis and repair to ensure safety and effectiveness.

10. How often does OBDII code P1BBF GMC related to Hybrid/Electric Vehicle Battery 73 Circuit High Voltage occur in GMC vehicles?

- The occurrence of this specific code may vary, but it is essential to address it promptly to prevent potential damage to the vehicle's high voltage system and maintain optimal performance.