AutoCodes – Chevrolet – P0B52 Chevrolet

P0B52 Chevrolet Code - Hybrid/Electric Vehicle Battery 5 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: P0B52 Chevrolet indicates Hybrid/Electric Vehicle Battery 5 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 926

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 P0B52 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 P0B52 Chevrolet - Hybrid/Electric Vehicle Battery 5 Circuit High Voltage - AutoCodes.com — P0B52 Chevrolet Code - Hybrid/Electric Vehicle Battery 5 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0B52 Chevrolet?

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

How to Fix the DTC P0B52 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 P0B52 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 P0B52 Chevrolet Code

1. What are common symptoms of OBDII code P0B52 in a Chevrolet hybrid/electric vehicle?

- Common symptoms include the check engine light coming on, reduced performance or power, and potential issues with the hybrid/electric battery system.

2. What does the OBDII code P0B52 in a Chevrolet hybrid/electric vehicle indicate?

- This code specifically refers to Hybrid/Electric Vehicle Battery 5 Circuit High Voltage, signaling a potential problem with the high voltage circuit in the battery system.

3. What are possible causes of OBDII code P0B52 in a Chevrolet hybrid/electric vehicle?

- Causes can include faulty battery cells, damaged wiring or connections in the high voltage circuit, issues with the battery management system, or a malfunctioning battery cooling system.

4. Can driving with OBDII code P0B52 in a Chevrolet hybrid/electric vehicle be dangerous?

- Driving with this code present can be risky as it may indicate a problem with the high voltage system, which can pose safety hazards. It is recommended to address the issue promptly.

5. How can OBDII code P0B52 in a Chevrolet hybrid/electric vehicle be diagnosed?

- Diagnosis typically involves using a diagnostic scanner to read the code, conducting a visual inspection of the battery system, checking the wiring and connections, and performing voltage tests.

6. Is it possible to reset OBDII code P0B52 in a Chevrolet hybrid/electric vehicle on my own?

- While you can clear the code using a diagnostic scanner, it is important to address the underlying issue causing the code to prevent potential safety risks and further damage.

7. Are there any DIY repair tips for addressing OBDII code P0B52 in a Chevrolet hybrid/electric vehicle?

- DIY repair is not recommended for this code due to the complexity and safety concerns associated with the high voltage system. It is best to seek professional assistance.

8. How much does it typically cost to repair OBDII code P0B52 in a Chevrolet hybrid/electric vehicle?

- The cost of repair can vary depending on the specific issue causing the code, but it may involve battery cell replacement, wiring repairs, or system recalibration, potentially ranging from hundreds to thousands of dollars.

9. Can OBDII code P0B52 in a Chevrolet hybrid/electric vehicle cause other problems if left unaddressed?

- Ignoring this code can lead to further damage to the battery system, reduced vehicle efficiency, and potential safety hazards due to the high voltage nature of the issue.

10. How frequently does OBDII code P0B52 occur in Chevrolet hybrid/electric vehicles?

- While the occurrence rate may vary, this code is relatively common in hybrid/electric vehicles and should be taken seriously to ensure the safe and efficient operation of the vehicle.