AutoCodes – Generic – P1BBF

P1BBF Code - Hybrid/Electric Vehicle Battery 73 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: P1BBF indicates Hybrid/Electric Vehicle Battery 73 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 1,475

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 P1BBF 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 P1BBF - Hybrid/Electric Vehicle Battery 73 Circuit High Voltage - AutoCodes.com — P1BBF Code - Hybrid/Electric Vehicle Battery 73 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1BBF?

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

How to Fix the DTC P1BBF?

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 P1BBF 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 P1BBF code?

Need more information on how to fix the P1BBF code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1BBF code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1BBF Buick — Hybrid/Electric Vehicle Battery 73 Circuit High Voltage
P1BBF Cadillac — Hybrid/Electric Vehicle Battery 73 Circuit High Voltage
P1BBF Chevrolet — Hybrid/Electric Vehicle Battery 73 Circuit High Voltage
P1BBF GMC — Hybrid/Electric Vehicle Battery 73 Circuit High Voltage
P1BBF Saturn — Hybrid/Electric Vehicle Battery 73 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 P1BBF Code

1. What are the common symptoms of OBDII code P1BBF (Hybrid/Electric Vehicle Battery 73 Circuit High Voltage)?

- Common symptoms include the check engine light being illuminated, reduced fuel efficiency, and potential issues with the hybrid/electric vehicle battery performance.

2. What are the possible causes of OBDII code P1BBF?

- Possible causes of this code include a faulty high voltage battery, damaged wiring in the circuit, a defective battery management system, or issues with the battery control module.

3. How serious is OBDII code P1BBF (Hybrid/Electric Vehicle Battery 73 Circuit High Voltage)?

- This code should be addressed promptly as it can lead to further damage to the high voltage battery system in the vehicle, potentially impacting the vehicle's overall performance and safety.

4. Can I continue driving my hybrid/electric vehicle with OBDII code P1BBF?

- It is not recommended to continue driving the vehicle with this code present, as it could lead to more severe issues with the high voltage battery system. It's best to have the vehicle diagnosed and repaired by a professional.

5. How can I diagnose OBDII code P1BBF at home?

- While it is possible to retrieve the code using an OBDII scanner, diagnosing the exact cause of P1BBF typically requires specialized knowledge and equipment specific to hybrid/electric vehicle systems. It's best to consult a professional for accurate diagnosis.

6. Is it safe to attempt repairs related to OBDII code P1BBF on my own?

- Due to the high voltage nature of the hybrid/electric vehicle battery system, it is not recommended for individuals without proper training and equipment to attempt repairs related to this code. Seek assistance from a qualified technician.

7. How much does it cost to repair OBDII code P1BBF?

- The cost of repairing this code can vary depending on the exact cause of the issue, parts needed for replacement, and labor costs. It's best to get a diagnostic assessment from a professional to determine the cost accurately.

8. Are there any maintenance tips to prevent OBDII code P1BBF from occurring?

- Regularly maintaining the high voltage battery system, following manufacturer-recommended service schedules, and addressing any warning signs promptly can help prevent issues leading to OBDII code P1BBF.

9. Can OBDII code P1BBF be intermittent or temporary?

- In some cases, the code may be triggered intermittently due to temporary issues. However, it's essential to have the vehicle checked by a professional to rule out any underlying problems that could worsen over time.

10. How long does it take to repair OBDII code P1BBF?

- The repair time for this code can vary depending on the complexity of the issue, availability of parts, and the technician's experience. In some cases, repairs may be completed in a few hours, while more extensive issues could take longer to address.