AutoCodes – Chevrolet – P0B45 Chevrolet

P0B45 Chevrolet Code - Hybrid/Electric Vehicle Battery 3 Circuit

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: P0B45 Chevrolet indicates Hybrid/Electric Vehicle Battery 3 Circuit.
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 1,120

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 P0B45 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 P0B45 Chevrolet - Hybrid/Electric Vehicle Battery 3 Circuit - AutoCodes.com — P0B45 Chevrolet Code - Hybrid/Electric Vehicle Battery 3 Circuit

What does this mean?

What are the Possible Causes of the DTC P0B45 Chevrolet?

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

How to Fix the DTC P0B45 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 P0B45 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 P0B45 Chevrolet Code

1. What are the common symptoms of OBDII code P0B45 in a Chevrolet hybrid/electric vehicle?

- Common symptoms include reduced hybrid system performance, decreased fuel efficiency, and potential difficulty starting the vehicle.

2. What typically causes the OBDII code P0B45 to appear in a Chevrolet hybrid/electric vehicle?

- This code usually indicates a malfunction in the Hybrid/Electric Vehicle Battery 3 Circuit, which can be caused by wiring issues, a faulty battery pack, or a problem with the battery management system.

3. How can I diagnose the source of the OBDII code P0B45 in my Chevrolet hybrid/electric vehicle?

- It is recommended to perform a thorough inspection of the battery system wiring, connectors, and the battery pack itself. Additionally, using a diagnostic scan tool can help pinpoint the exact cause of the issue.

4. What are some repair tips for addressing OBDII code P0B45 in a Chevrolet hybrid/electric vehicle?

- Repairing or replacing damaged wiring, connectors, or the battery pack may be necessary to resolve this code. It is also important to ensure that the battery management system is functioning correctly.

5. Can I continue driving my Chevrolet hybrid/electric vehicle with the OBDII code P0B45 present?

- It is not recommended to continue driving the vehicle with this code, as it can lead to further damage to the hybrid system and potentially unsafe driving conditions. It is best to address the issue promptly.

6. How serious is the OBDII code P0B45 in a Chevrolet hybrid/electric vehicle?

- While the code itself may not always cause immediate drivability issues, it is a sign of a problem within the hybrid system that should be addressed to prevent more significant issues down the line.

7. Is it possible to reset the OBDII code P0B45 in a Chevrolet hybrid/electric vehicle without fixing the underlying issue?

- Resetting the code without addressing the underlying problem will likely result in the code reappearing once the vehicle is driven again. It is essential to diagnose and repair the issue to prevent recurrence.

8. How much does it typically cost to repair OBDII code P0B45 in a Chevrolet hybrid/electric vehicle?

- The cost of repairing this code can vary depending on the specific issue causing it. Repairs may range from a few hundred to a few thousand dollars, depending on the extent of the problem.

9. Can I fix the OBDII code P0B45 in my Chevrolet hybrid/electric vehicle myself, or do I need to take it to a professional mechanic?

- While some DIY enthusiasts may be able to address simpler wiring issues, diagnosing and repairing the hybrid system related to this code is best left to professional mechanics with experience in hybrid/electric vehicles.

10. How can I prevent OBDII code P0B45 from appearing in my Chevrolet hybrid/electric vehicle in the future?

- Regular maintenance, including checking the battery system components and ensuring proper charging habits, can help prevent issues that could trigger this code. Additionally, addressing any warning signs promptly can help avoid more extensive repairs.