AutoCodes – GMC – P1BB3 GMC

P1BB3 GMC Code - Hybrid/Electric Vehicle Battery 69 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: P1BB3 GMC indicates Hybrid/Electric Vehicle Battery 69 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 1,051

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1BB3 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 P1BB3 GMC - Hybrid/Electric Vehicle Battery 69 Circuit High Voltage - AutoCodes.com — P1BB3 GMC Code - Hybrid/Electric Vehicle Battery 69 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1BB3 GMC?

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

How to Fix the DTC P1BB3 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 P1BB3 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.

Need more information about the P1BB3 GMC code?

Need more information on how to fix the P1BB3 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1BB3 GMC code diagnosed by a professional: Find a repair shop in your area

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 P1BB3 GMC Code

1. What are the common symptoms associated with OBDII code P1BB3 GMC (Hybrid/Electric Vehicle Battery 69 Circuit High Voltage)?

The common symptoms include the check engine light illuminating, reduced hybrid system performance, and potential issues with the vehicle's battery system.

2. What are the possible causes of OBDII code P1BB3 GMC?

Possible causes of this code may include a faulty high voltage battery pack, damaged wiring or connectors in the battery 69 circuit, or issues with the battery management system.

3. How can I diagnose OBDII code P1BB3 GMC at home?

You can use an OBDII scanner to retrieve the fault code and further diagnose the issue. However, diagnosing and repairing high voltage systems like the hybrid/electric vehicle battery should be done by a qualified technician.

4. Can I continue driving my vehicle with OBDII code P1BB3 GMC present?

It is not recommended to drive your vehicle with this code present, as it can lead to further damage to the high voltage battery system and potentially pose a safety risk.

5. How can I repair OBDII code P1BB3 GMC (Hybrid/Electric Vehicle Battery 69 Circuit High Voltage)?

Repairing this code typically involves inspecting and repairing any damaged wiring or connectors in the battery 69 circuit, testing the high voltage battery pack, and resetting the fault code.

6. Are there any safety precautions to keep in mind when dealing with high voltage systems like the hybrid/electric vehicle battery?

Yes, working on high voltage systems requires specific safety precautions and should only be done by trained professionals to prevent electric shock or other hazards.

7. Is it possible to reset OBDII code P1BB3 GMC without fixing the underlying issue?

Resetting the fault code without addressing the root cause will likely result in the code reappearing once the vehicle's onboard diagnostics detect the issue again.

8. Can extreme weather conditions affect the occurrence of OBDII code P1BB3 GMC?

Extreme weather conditions, especially temperature fluctuations, can impact the performance and health of the high voltage battery system, potentially leading to the occurrence of this fault code.

9. Is there a recommended maintenance schedule for the hybrid/electric vehicle battery system to prevent OBDII code P1BB3 GMC?

Regular maintenance, such as checking and maintaining proper coolant levels, inspecting wiring and connectors, and following manufacturer recommendations, can help prevent issues that may trigger this fault code.

10. How long does it typically take to repair OBDII code P1BB3 GMC in a hybrid/electric vehicle?

The repair time can vary depending on the specific cause of the fault, the complexity of the repair, and the availability of parts. It is best to consult with a qualified technician for an accurate estimate.