AutoCodes – GMC – P1B5F GMC

P1B5F GMC Code - Hybrid/Electric Vehicle Battery 41 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: P1B5F GMC indicates Hybrid/Electric Vehicle Battery 41 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 910

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 P1B5F GMC 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 P1B5F GMC - Hybrid/Electric Vehicle Battery 41 Circuit High Voltage - AutoCodes.com — P1B5F GMC Code - Hybrid/Electric Vehicle Battery 41 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1B5F GMC?

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

How to Fix the DTC P1B5F GMC?

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 P1B5F GMC 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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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 P1B5F GMC Code

1. What are the common symptoms of OBDII code P1B5F GMC related to the Hybrid/Electric Vehicle Battery 41 Circuit High Voltage?

- The common symptoms include check engine light illumination, reduced hybrid/electric vehicle performance, and potential issues with battery charging.

2. What are the possible causes of OBDII code P1B5F GMC indicating Hybrid/Electric Vehicle Battery 41 Circuit High Voltage?

- The potential causes may include a faulty high voltage battery pack, damaged battery wiring or connectors, issues with the battery management system, or a malfunctioning sensor.

3. How can I diagnose the OBDII code P1B5F GMC for Hybrid/Electric Vehicle Battery 41 Circuit High Voltage?

- Diagnosis typically involves using a scan tool to read the code, inspecting the high voltage battery system components, checking wiring connections, and testing the battery voltage levels.

4. Is it safe to continue driving with OBDII code P1B5F GMC indicating Hybrid/Electric Vehicle Battery 41 Circuit High Voltage?

- It is recommended to avoid driving the vehicle if possible and have it inspected by a qualified technician to prevent any potential safety hazards or further damage to the vehicle.

5. Can I repair OBDII code P1B5F GMC related to Hybrid/Electric Vehicle Battery 41 Circuit High Voltage myself?

- Repairing this code may require specialized knowledge and equipment due to the high voltage nature of hybrid/electric vehicle systems. It is advisable to seek professional assistance for proper diagnosis and repair.

6. How much does it typically cost to fix OBDII code P1B5F GMC for Hybrid/Electric Vehicle Battery 41 Circuit High Voltage?

- The cost of repairs can vary depending on the exact cause of the issue, the extent of the damage, and labor rates in your area. It is recommended to obtain quotes from reputable auto repair shops.

7. Are there any maintenance tips to prevent OBDII code P1B5F GMC from appearing in the future?

- Regularly inspecting the high voltage battery system, keeping the battery connections clean and secure, following manufacturer's maintenance guidelines, and avoiding overcharging the battery can help prevent this code from reoccurring.

8. Can a faulty sensor trigger OBDII code P1B5F GMC for Hybrid/Electric Vehicle Battery 41 Circuit High Voltage?

- Yes, a malfunctioning sensor within the high voltage battery system can potentially trigger this code. It is important to have all sensors properly inspected and tested during diagnosis.

9. Will resetting the OBDII code P1B5F GMC clear the issue related to Hybrid/Electric Vehicle Battery 41 Circuit High Voltage?

- Simply clearing the code without addressing the root cause of the problem will not resolve the issue. It is essential to diagnose and repair the underlying problem to prevent the code from reappearing.

10. How long does it take to repair OBDII code P1B5F GMC for Hybrid/Electric Vehicle Battery 41 Circuit High Voltage?

- The repair time can vary based on the complexity of the issue, availability of parts, and the technician's experience. Some repairs may be completed in a few hours, while others may take longer depending on the extent of the problem.