AutoCodes – GMC – P1B69 GMC

P1B69 GMC Code - Hybrid/Electric Vehicle Battery 45 Circuit Performance

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: P1B69 GMC indicates Hybrid/Electric Vehicle Battery 45 Circuit Performance.
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 873

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 P1B69 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 P1B69 GMC - Hybrid/Electric Vehicle Battery 45 Circuit Performance - AutoCodes.com — P1B69 GMC Code - Hybrid/Electric Vehicle Battery 45 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1B69 GMC?

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

How to Fix the DTC P1B69 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 P1B69 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 P1B69 GMC Code

1. What are common symptoms associated with OBDII code P1B69 GMC in hybrid/electric vehicles?

- Common symptoms include poor performance, reduced fuel efficiency, and potential issues with starting the vehicle.

2. What can cause the OBDII code P1B69 GMC to trigger in hybrid/electric vehicles?

- The code can be triggered by issues such as a malfunctioning hybrid/electric vehicle battery, damaged wiring, or faulty circuit connections.

3. How serious is the OBDII code P1B69 GMC in hybrid/electric vehicles?

- The code indicates a performance issue with the hybrid/electric vehicle battery circuit, which can impact the vehicle's overall efficiency and operation.

4. Can I continue to drive my hybrid/electric vehicle with the OBDII code P1B69 GMC present?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to further damage and potential safety hazards.

5. What are some DIY repair tips for addressing the OBDII code P1B69 GMC in a hybrid/electric vehicle?

- DIY repair tips may include checking and tightening battery connections, inspecting for damaged wiring, and ensuring proper battery cooling.

6. How can a professional mechanic diagnose and repair the OBDII code P1B69 GMC in a hybrid/electric vehicle?

- A professional mechanic can use specialized diagnostic equipment to pinpoint the exact cause of the code and perform repairs like replacing the hybrid/electric vehicle battery or repairing circuit connections.

7. Are there any recalls or technical service bulletins related to the OBDII code P1B69 GMC in GMC hybrid/electric vehicles?

- It's recommended to check with GMC or contact a dealership to inquire about any recalls or technical service bulletins related to this specific code.

8. What are the potential costs associated with repairing the OBDII code P1B69 GMC in a hybrid/electric vehicle?

- The costs can vary depending on the exact cause of the issue, but repairs related to the hybrid/electric vehicle battery circuit can range from a few hundred to a few thousand dollars.

9. How can regular maintenance help prevent the OBDII code P1B69 GMC from occurring in a hybrid/electric vehicle?

- Regular maintenance, including checking the battery connections, monitoring battery health, and addressing any warning signs promptly, can help prevent issues leading to this code.