AutoCodes – Generic – P1BBE

P1BBE Code - Hybrid/Electric Vehicle Battery 73 Circuit Low 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: P1BBE indicates Hybrid/Electric Vehicle Battery 73 Circuit Low 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 2,773

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 P1BBE 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 P1BBE - Hybrid/Electric Vehicle Battery 73 Circuit Low Voltage - AutoCodes.com — P1BBE Code - Hybrid/Electric Vehicle Battery 73 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1BBE?

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

How to Fix the DTC P1BBE?

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 P1BBE 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 P1BBE code?

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Need Help with the Code?

Get the P1BBE code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1BBE Buick — Hybrid/Electric Vehicle Battery 73 Circuit Low Voltage
P1BBE Cadillac — Hybrid/Electric Vehicle Battery 73 Circuit Low Voltage
P1BBE Chevrolet — Hybrid/Electric Vehicle Battery 73 Circuit Low Voltage
P1BBE GMC — Hybrid/Electric Vehicle Battery 73 Circuit Low Voltage
P1BBE Saturn — Hybrid/Electric Vehicle Battery 73 Circuit Low 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 P1BBE Code

1. What are the common symptoms of OBDII code P1BBE (Hybrid/Electric Vehicle Battery 73 Circuit Low Voltage)?

- Common symptoms include reduced electric power steering assistance, dimming lights, and overall poor performance of the hybrid/electric vehicle.

2. What are the possible causes of OBDII code P1BBE?

- The code P1BBE can be triggered by issues such as a faulty hybrid battery, low voltage in the battery 73 circuit, or damaged electrical connections.

3. How can I diagnose the OBDII code P1BBE?

- Diagnosing the code P1BBE involves using a scan tool to check for the specific fault code, inspecting the hybrid battery for any visible damage, and testing the voltage in the battery 73 circuit.

4. Can a DIY enthusiast repair OBDII code P1BBE at home?

- Repairing OBDII code P1BBE may require specialized knowledge and equipment due to the complexity of hybrid/electric vehicle systems. It is recommended to seek professional assistance for proper diagnosis and repair.

5. Is it safe to continue driving with OBDII code P1BBE present?

- It is not recommended to continue driving with OBDII code P1BBE active, as it can lead to further damage to the hybrid/electric vehicle's battery system and potentially compromise driving safety.

6. How much does it typically cost to repair OBDII code P1BBE?

- The cost of repairing OBDII code P1BBE can vary depending on the specific issue causing the code, the vehicle make and model, and labor rates. It is advised to obtain a diagnosis from a qualified technician for an accurate estimate.

7. Are there any preventive maintenance tips to avoid OBDII code P1BBE?

- Regularly inspecting the hybrid/electric vehicle's battery system, keeping the connections clean and secure, and following the manufacturer's maintenance schedule can help prevent issues that may trigger code P1BBE.

8. Can extreme weather conditions contribute to triggering OBDII code P1BBE?

- Yes, extreme temperatures can impact the performance of hybrid/electric vehicle batteries, potentially leading to low voltage issues and triggering code P1BBE. Proper care and maintenance during extreme weather conditions are important.

9. How long does it typically take to repair OBDII code P1BBE?

- The repair time for OBDII code P1BBE can vary depending on the complexity of the issue, availability of parts, and the technician's workload. It is advisable to consult with the repair shop for an estimated timeframe.

10. Can a weak or failing hybrid/electric vehicle battery cause OBDII code P1BBE?

- Yes, a weak or failing hybrid/electric vehicle battery can contribute to triggering code P1BBE due to low voltage in the battery 73 circuit. It is important to address battery issues promptly to prevent further damage.