AutoCodes – Generic – P1BAB

P1BAB 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 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.

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Code Popularity 1,102

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

What does this mean?

What are the Possible Causes of the DTC P1BAB?

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

How to Fix the DTC P1BAB?

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 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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Need Help with the Code?

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Information for Specific Makes

P1BAB Buick — Hybrid/Electric Vehicle Battery 67 Circuit Performance
P1BAB Cadillac — Hybrid/Electric Vehicle Battery 67 Circuit Performance
P1BAB Chevrolet — Hybrid/Electric Vehicle Battery 67 Circuit Performance
P1BAB GMC — Hybrid/Electric Vehicle Battery 67 Circuit Performance
P1BAB Saturn — Hybrid/Electric Vehicle Battery 67 Circuit Performance

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 Code

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

The common symptoms of code P1BAB may include reduced hybrid/electric vehicle performance, decreased fuel efficiency, and potential illumination of the check engine light.

2. What are the possible causes of OBDII code P1BAB?

Potential causes of code P1BAB include issues with the hybrid/electric vehicle battery 67 circuit, such as wiring faults, connector problems, damaged components, or issues with the battery management system.

3. How can I diagnose OBDII code P1BAB?

Diagnosing code P1BAB typically involves using a scan tool to read the code, inspecting the hybrid/electric vehicle battery 67 circuit for any visible damage, checking the battery connections, and testing the battery components for proper functionality.

4. Can I drive my vehicle with OBDII code P1BAB?

It is not recommended to drive your vehicle with an active P1BAB code, as it can lead to further damage to the hybrid/electric vehicle system. It is best to address the issue promptly to avoid potential safety hazards.

5. How can I repair OBDII code P1BAB?

Repairing code P1BAB may involve repairing or replacing damaged wiring, connectors, or components in the hybrid/electric vehicle battery 67 circuit. It is advisable to follow manufacturer-recommended repair procedures.

6. Will resetting the OBDII code P1BAB make it go away permanently?

Simply resetting the code may temporarily clear the check engine light, but if the underlying issue causing code P1BAB is not addressed, the code is likely to reappear. It is crucial to diagnose and repair the root cause of the problem.

7. Is OBDII code P1BAB specific to hybrid or electric vehicles only?

Yes, code P1BAB is specific to hybrid or electric vehicles, as it relates to the performance of the hybrid/electric vehicle battery 67 circuit. Conventional gasoline vehicles do not have this particular code.

8. Can a DIY enthusiast fix OBDII code P1BAB at home?

While some basic diagnostics and inspections can be done at home, addressing code P1BAB often requires specialized knowledge and tools related to hybrid/electric vehicle systems. It is recommended to consult a professional technician for proper diagnosis and repair.

9. How much does it typically cost to repair OBDII code P1BAB?

The cost of repairing code P1BAB can vary depending on the extent of the issue, the specific components needing repair or replacement, and labor costs. It is advisable to obtain estimates from reputable auto repair shops.

10. Are there any preventive measures to avoid OBDII code P1BAB in hybrid/electric vehicles?

Regular maintenance of the hybrid/electric vehicle system, including checking the battery connections, monitoring battery health, and addressing any warning signs promptly, can help prevent issues that may trigger code P1BAB.