AutoCodes – Chevrolet – P0BAC Chevrolet

P0BAC Chevrolet Code - Hybrid/Electric Vehicle Battery 23 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: P0BAC Chevrolet indicates Hybrid/Electric Vehicle Battery 23 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 861

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 08, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0BAC Chevrolet 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 P0BAC Chevrolet - Hybrid/Electric Vehicle Battery 23 Circuit High Voltage - AutoCodes.com — P0BAC Chevrolet Code - Hybrid/Electric Vehicle Battery 23 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0BAC Chevrolet?

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

How to Fix the DTC P0BAC Chevrolet?

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 P0BAC Chevrolet 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 P0BAC Chevrolet Code

1. What are common symptoms of OBDII code P0BAC in a Chevrolet hybrid/electric vehicle?

- Common symptoms include the check engine light coming on, reduced fuel efficiency, and potential issues with the vehicle's hybrid/electric system.

2. What typically causes the OBDII code P0BAC in a Chevrolet hybrid/electric vehicle?

- The code P0BAC is usually triggered by a high voltage condition detected in the Hybrid/Electric Vehicle Battery 23 circuit.

3. How serious is the OBDII code P0BAC in a Chevrolet hybrid/electric vehicle?

- The code P0BAC should be addressed promptly as it indicates a potential high voltage issue in the vehicle's hybrid/electric system, which can impact performance and safety.

4. Can driving with the OBDII code P0BAC in a Chevrolet hybrid/electric vehicle cause further damage?

- Continuing to drive with the P0BAC code may lead to further issues with the vehicle's hybrid/electric system and should be avoided until the problem is diagnosed and repaired.

5. How can I diagnose the OBDII code P0BAC in my Chevrolet hybrid/electric vehicle?

- Proper diagnosis of the P0BAC code requires a scan tool to read the code, followed by a thorough inspection of the Hybrid/Electric Vehicle Battery 23 circuit for potential faults.

6. What are some repair tips for fixing the OBDII code P0BAC in a Chevrolet hybrid/electric vehicle?

- Repair tips may include checking the battery connections, inspecting for damaged wiring, testing the battery voltage, and consulting a professional if needed.

7. Can I reset the OBDII code P0BAC in my Chevrolet hybrid/electric vehicle on my own?

- While you can attempt to clear the code using an OBDII scanner, it is important to address the underlying issue causing the P0BAC code to prevent it from returning.

8. Are there any safety precautions to keep in mind when dealing with the OBDII code P0BAC in a Chevrolet hybrid/electric vehicle?

- It is crucial to handle high voltage components with care, follow proper safety procedures outlined in the vehicle manual, and consider seeking professional help if unsure.

9. How much does it typically cost to repair the OBDII code P0BAC in a Chevrolet hybrid/electric vehicle?

- Repair costs for the P0BAC code can vary depending on the underlying issue, parts needed, and labor involved, so it is advisable to get a professional diagnosis for an accurate estimate.

10. Can I prevent the OBDII code P0BAC from reoccurring in my Chevrolet hybrid/electric vehicle?

- Regular maintenance, checking the battery connections, and addressing any warning signs promptly can help prevent the recurrence of the P0BAC code in your vehicle.