AutoCodes – GMC – P1BAB GMC

P1BAB GMC Code - Hybrid/Electric Vehicle Battery 67 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: P1BAB GMC indicates Hybrid/Electric Vehicle Battery 67 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.

Save to My Repairs My Repairs

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

Code Popularity 803

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 P1BAB 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 P1BAB GMC - Hybrid/Electric Vehicle Battery 67 Circuit Performance - AutoCodes.com — P1BAB GMC Code - Hybrid/Electric Vehicle Battery 67 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1BAB GMC?

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

How to Fix the DTC P1BAB 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 P1BAB 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 P1BAB GMC code?

Need more information on how to fix the P1BAB GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1BAB 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 P1BAB GMC Code

1. What are the common symptoms of OBDII code P1BAB GMC related to Hybrid/Electric Vehicle Battery 67 Circuit Performance?

Symptoms may include reduced hybrid system performance, decreased fuel efficiency, illuminated warning lights on the dashboard, and potential drivability issues.

2. What are the possible causes of OBDII code P1BAB GMC indicating Hybrid/Electric Vehicle Battery 67 Circuit Performance issues?

Potential causes may include faulty battery pack, damaged wiring or connectors in the battery circuit, software glitches, or issues with the battery management system.

3. How can I diagnose OBDII code P1BAB GMC for Hybrid/Electric Vehicle Battery 67 Circuit Performance problems?

Diagnosis typically involves using a diagnostic scanner to retrieve the code, inspecting the battery pack and associated wiring for any visible damage, and conducting electrical tests to pinpoint the issue.

4. Can I still drive my vehicle with OBDII code P1BAB GMC related to Hybrid/Electric Vehicle Battery 67 Circuit Performance?

It is not recommended to drive the vehicle with this code as it can lead to further damage to the hybrid system. It is advisable to have the issue diagnosed and repaired promptly.

5. How can I reset OBDII code P1BAB GMC for Hybrid/Electric Vehicle Battery 67 Circuit Performance after making the necessary repairs?

Once the repairs have been completed, the code can be cleared using a diagnostic scanner or by disconnecting the vehicle's battery for a few minutes to reset the system.

6. Are there any DIY repair tips for addressing OBDII code P1BAB GMC issues with Hybrid/Electric Vehicle Battery 67 Circuit Performance?

While basic inspections and visual checks can be done by DIY enthusiasts, complex repairs involving the hybrid system, battery pack, or wiring should be handled by qualified technicians to ensure safety and proper functioning.

7. How much does it typically cost to repair OBDII code P1BAB GMC related to Hybrid/Electric Vehicle Battery 67 Circuit Performance?

The cost of repairs can vary depending on the specific issue causing the code, the extent of the damage, and labor rates in your area. It is recommended to obtain quotes from different repair shops for an accurate estimate.

8. Can a weak or failing hybrid/electric vehicle battery cause OBDII code P1BAB GMC to appear?

Yes, a weak or failing battery pack can trigger this code due to inadequate performance or voltage irregularities in the hybrid/electric system.

9. How often should I have the hybrid/electric vehicle battery system inspected to prevent OBDII code P1BAB GMC issues?

Regular maintenance schedules for hybrid/electric vehicles often include battery system inspections as part of routine servicing. It is advisable to follow the manufacturer's recommended maintenance intervals to prevent potential issues.

10. Is it safe to attempt to repair OBDII code P1BAB GMC issues related to Hybrid/Electric Vehicle Battery 67 Circuit Performance without proper training or experience?

Due to the complex nature of hybrid/electric vehicle systems and potential safety hazards involved, it is not recommended for individuals without proper training and experience to attempt repairs related to this OBDII code. Professional assistance is advised.