AutoCodes – GMC – P0B5C GMC

P0B5C GMC Code - Hybrid/Electric Vehicle Battery 7 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: P0B5C GMC indicates Hybrid/Electric Vehicle Battery 7 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 759

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 07, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0B5C 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 P0B5C GMC - Hybrid/Electric Vehicle Battery 7 Circuit High Voltage - AutoCodes.com — P0B5C GMC Code - Hybrid/Electric Vehicle Battery 7 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0B5C GMC?

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

How to Fix the DTC P0B5C 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 P0B5C 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 P0B5C GMC Code

1. What are common symptoms of OBDII code P0B5C GMC related to Hybrid/Electric Vehicle Battery 7 Circuit High Voltage?

- Common symptoms include reduced power, poor fuel economy, difficulty starting the vehicle, and potential hybrid system warning lights.

2. What are the possible causes of OBDII code P0B5C GMC indicating Hybrid/Electric Vehicle Battery 7 Circuit High Voltage?

- The code can be triggered by issues such as a faulty high voltage battery, damaged wiring, loose connections, or a malfunctioning battery management system.

3. How can I diagnose the source of the OBDII code P0B5C GMC for Hybrid/Electric Vehicle Battery 7 Circuit High Voltage?

- Diagnosis typically involves using a scan tool to read the code, checking the high voltage battery and related components for damage, and performing voltage and resistance tests on the circuit.

4. Is it safe to continue driving with OBDII code P0B5C GMC related to Hybrid/Electric Vehicle Battery 7 Circuit High Voltage?

- It is not recommended to continue driving with this code present, as it can lead to further damage to the hybrid system or pose a safety risk due to potential high voltage issues.

5. How can I repair OBDII code P0B5C GMC for Hybrid/Electric Vehicle Battery 7 Circuit High Voltage?

- Repairing the issue may involve replacing a faulty high voltage battery, repairing damaged wiring or connections, recalibrating the battery management system, or resetting the fault code with a diagnostic tool.

6. Can a DIY enthusiast tackle the repair of OBDII code P0B5C GMC related to Hybrid/Electric Vehicle Battery 7 Circuit High Voltage?

- Due to the high voltage nature of the components involved, it is recommended to have repairs done by a qualified technician or at a specialized hybrid/electric vehicle service center.

7. How can regular maintenance help prevent OBDII code P0B5C GMC for Hybrid/Electric Vehicle Battery 7 Circuit High Voltage?

- Regular maintenance, such as checking the high voltage battery's condition, inspecting wiring for wear, and keeping connections secure, can help prevent issues that may trigger this code.

8. Are there any recalls or technical service bulletins related to OBDII code P0B5C GMC for Hybrid/Electric Vehicle Battery 7 Circuit High Voltage?

- It is advisable to check with your vehicle manufacturer or authorized dealer for any relevant recalls or technical service bulletins related to this specific OBDII code.

9. Can extreme weather conditions affect the triggering of OBDII code P0B5C GMC for Hybrid/Electric Vehicle Battery 7 Circuit High Voltage?

- Yes, extreme temperatures or environmental conditions can affect the performance of high voltage batteries and other components, potentially leading to issues that trigger this code.

10. What is the typical cost of repairing OBDII code P0B5C GMC related to Hybrid/Electric Vehicle Battery 7 Circuit High Voltage?

- The cost of repair can vary depending on the specific issue causing the code, the extent of the damage, and labor rates. It is recommended to obtain quotes from reputable repair shops or dealerships.