AutoCodes – Generic – P1BB1

P1BB1 Code - Hybrid/Electric Vehicle Battery 69 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: P1BB1 indicates Hybrid/Electric Vehicle Battery 69 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 3,289

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 P1BB1 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 P1BB1 - Hybrid/Electric Vehicle Battery 69 Circuit Performance - AutoCodes.com — P1BB1 Code - Hybrid/Electric Vehicle Battery 69 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1BB1?

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

How to Fix the DTC P1BB1?

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 P1BB1 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

P1BB1 Buick — Hybrid/Electric Vehicle Battery 69 Circuit Performance
P1BB1 Cadillac — Hybrid/Electric Vehicle Battery 69 Circuit Performance
P1BB1 Chevrolet — Hybrid/Electric Vehicle Battery 69 Circuit Performance
P1BB1 GMC — Hybrid/Electric Vehicle Battery 69 Circuit Performance
P1BB1 Saturn — Hybrid/Electric Vehicle Battery 69 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 P1BB1 Code

1. What are the common symptoms of OBDII code P1BB1 (Hybrid/Electric Vehicle Battery 69 Circuit Performance)?

- Common symptoms include decreased fuel efficiency, loss of power, and potential issues with the hybrid/electric vehicle's battery performance.

2. What are the possible causes of OBDII code P1BB1?

- The code P1BB1 may be triggered by faulty battery cells, damaged wiring in the battery circuit, or issues with the battery management system.

3. How can I diagnose OBDII code P1BB1?

- Diagnosis usually involves using a diagnostic scan tool to retrieve the code, inspecting the hybrid/electric vehicle's battery components, and checking for any visible signs of damage.

4. Can I still drive my vehicle with OBDII code P1BB1?

- It is not recommended to drive the vehicle with code P1BB1 present, as it can lead to further damage to the battery system and potentially affect the vehicle's performance.

5. How can I repair OBDII code P1BB1?

- Repairing the code P1BB1 may involve replacing faulty battery cells, repairing damaged wiring, or resetting the battery management system with the help of a professional technician.

6. Are there any DIY tips for addressing OBDII code P1BB1?

- DIY tips may include checking the battery connections for any loose or corroded terminals, ensuring proper battery coolant levels, and keeping the battery system clean from debris.

7. Is OBDII code P1BB1 specific to certain hybrid or electric vehicle models?

- While the code P1BB1 relates to hybrid/electric vehicle battery circuit performance, it may vary slightly in its interpretation across different vehicle manufacturers.

8. How urgent is it to address OBDII code P1BB1?

- It is important to address code P1BB1 promptly to prevent further damage to the hybrid/electric vehicle's battery system and ensure optimal performance and safety.

9. Can a regular mechanic repair OBDII code P1BB1, or do I need to visit a specialized hybrid/electric vehicle technician?

- While a regular mechanic may be able to diagnose and repair some aspects of code P1BB1, visiting a specialized hybrid/electric vehicle technician is recommended for complex battery system issues.

10. What precautions should I take when dealing with OBDII code P1BB1 in a hybrid or electric vehicle?

- When dealing with code P1BB1, it is crucial to follow manufacturer guidelines, avoid tampering with high-voltage components, and prioritize safety by disconnecting the battery before any inspection or repair work.