AutoCodes – GMC – P1BCE GMC

P1BCE GMC Code - Hybrid/Electric Vehicle Battery 78 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: P1BCE GMC indicates Hybrid/Electric Vehicle Battery 78 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 1,094

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 P1BCE 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 P1BCE GMC - Hybrid/Electric Vehicle Battery 78 Circuit High Voltage - AutoCodes.com — P1BCE GMC Code - Hybrid/Electric Vehicle Battery 78 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1BCE GMC?

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

How to Fix the DTC P1BCE 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 P1BCE 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 P1BCE GMC Code

1. What are the common symptoms of OBDII code P1BCE GMC related to the Hybrid/Electric Vehicle Battery 78 Circuit High Voltage?

- Common symptoms include loss of power, decreased fuel efficiency, and illuminated warning lights on the dashboard.

2. What are the possible causes of OBDII code P1BCE GMC indicating Hybrid/Electric Vehicle Battery 78 Circuit High Voltage?

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

3. How can I diagnose the OBDII code P1BCE GMC for the Hybrid/Electric Vehicle Battery 78 Circuit High Voltage issue?

- Diagnosis involves using a professional OBDII scanner to retrieve the specific trouble code and then inspecting the high voltage battery system for any visible damage or irregularities.

4. Is it safe to continue driving my vehicle with the OBDII code P1BCE GMC related to the Hybrid/Electric Vehicle Battery 78 Circuit High Voltage?

- It is not recommended to drive the vehicle with this code active, as it can lead to further damage to the high voltage battery system and potentially pose safety risks.

5. How can I repair OBDII code P1BCE GMC for the Hybrid/Electric Vehicle Battery 78 Circuit High Voltage issue?

- Repairing this code typically involves replacing the faulty high voltage battery or repairing any damaged wiring in the battery circuit. It is recommended to have the repair done by a qualified technician familiar with hybrid/electric vehicles.

6. Are there any preventive maintenance tips to avoid the OBDII code P1BCE GMC related to the Hybrid/Electric Vehicle Battery 78 Circuit High Voltage?

- Regularly scheduled maintenance, such as checking the high voltage battery system during service intervals and keeping the battery system clean, can help prevent issues that may trigger this code.

7. Can a DIY enthusiast with automotive knowledge fix the OBDII code P1BCE GMC for the Hybrid/Electric Vehicle Battery 78 Circuit High Voltage?

- Due to the complexity and high voltage nature of the hybrid/electric vehicle system, it is recommended to seek professional assistance from a qualified technician for diagnosing and repairing this code.

8. How long does it typically take to repair the OBDII code P1BCE GMC associated with the Hybrid/Electric Vehicle Battery 78 Circuit High Voltage?

- The repair time can vary depending on the extent of the issue and the availability of parts. In general, repairing this code may take a few hours to a full day in a professional repair shop.

9. Are there any recalls or technical service bulletins related to the OBDII code P1BCE GMC for the Hybrid/Electric Vehicle Battery 78 Circuit High Voltage?

- It is advisable to check with the vehicle manufacturer or authorized dealerships for any recalls or technical service bulletins related to this specific OBDII code to see if there are known issues or remedies available.

10. What are the potential risks of ignoring the OBDII code P1BCE GMC concerning the Hybrid/Electric Vehicle Battery 78 Circuit High Voltage?

- Ignoring this code can lead to further damage to the high voltage battery system, potentially causing more expensive repairs and safety hazards. It is important to address this issue promptly to ensure the vehicle's safe operation.