AutoCodes – Generic – P1B1E

P1B1E Code - Hybrid/Electric Vehicle Battery 29 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: P1B1E indicates Hybrid/Electric Vehicle Battery 29 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.

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Code Popularity 1,488

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 08, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1B1E 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 P1B1E - Hybrid/Electric Vehicle Battery 29 Circuit High Voltage - AutoCodes.com — P1B1E Code - Hybrid/Electric Vehicle Battery 29 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1B1E?

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

How to Fix the DTC P1B1E?

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 P1B1E 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 P1B1E code?

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Need Help with the Code?

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Information for Specific Makes

P1B1E Buick — Hybrid/Electric Vehicle Battery 29 Circuit High Voltage
P1B1E Cadillac — Hybrid/Electric Vehicle Battery 29 Circuit High Voltage
P1B1E Chevrolet — Hybrid/Electric Vehicle Battery 29 Circuit High Voltage
P1B1E GMC — Hybrid/Electric Vehicle Battery 29 Circuit High Voltage
P1B1E Saturn — Hybrid/Electric Vehicle Battery 29 Circuit High Voltage

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 P1B1E Code

1. What are the common symptoms of OBDII code P1B1E (Hybrid/Electric Vehicle Battery 29 Circuit High Voltage)?

- Common symptoms include the check engine light illuminating, reduced hybrid/electric vehicle performance, and potential issues with battery charging.

2. What can cause the OBDII code P1B1E to trigger?

- The code P1B1E can be triggered by issues such as a faulty high voltage battery pack, damaged wiring in the high voltage circuit, or a malfunctioning battery management system.

3. How serious is the OBDII code P1B1E (Hybrid/Electric Vehicle Battery 29 Circuit High Voltage)?

- This code is considered serious as it indicates a potential high voltage system issue in hybrid/electric vehicles, which can pose safety risks and affect vehicle performance.

4. Can I continue driving my vehicle with the OBDII code P1B1E present?

- It is not recommended to continue driving your vehicle with the code P1B1E present, as it can lead to further damage to the high voltage system and potentially unsafe driving conditions.

5. How can I diagnose the OBDII code P1B1E at home?

- While diagnosing this code may require specialized equipment, you can start by checking the high voltage battery connections, inspecting the wiring for any visible damage, and ensuring the battery management system is functioning properly.

6. What are some repair tips for addressing the OBDII code P1B1E?

- Repairing this code may involve replacing the high voltage battery pack, repairing damaged wiring, or recalibrating the battery management system. It is recommended to consult a professional technician for accurate diagnosis and repair.

7. Are there any safety precautions to keep in mind when dealing with the OBDII code P1B1E?

- When working on the high voltage system associated with this code, always follow proper safety protocols, such as wearing insulated gloves and disconnecting the high voltage system before conducting any repairs.

8. Can the OBDII code P1B1E be a false alarm?

- While false alarms are possible with any diagnostic trouble code, it is crucial to take the code P1B1E seriously due to its association with high voltage systems in hybrid/electric vehicles. It is recommended to have the issue properly diagnosed to ensure safety and performance.

9. How much does it typically cost to repair the OBDII code P1B1E?

- The cost of repairing the OBDII code P1B1E can vary depending on the underlying cause, parts needed for repair, and labor costs. It is advisable to obtain estimates from qualified technicians or dealerships.

10. Is the OBDII code P1B1E specific to certain hybrid or electric vehicle models?

- The OBDII code P1B1E (Hybrid/Electric Vehicle Battery 29 Circuit High Voltage) may be specific to certain hybrid or electric vehicle models equipped with high voltage battery systems. It is important to consult the vehicle's service manual or a professional technician for model-specific information.