AutoCodes – Chevrolet – P1B93 Chevrolet

P1B93 Chevrolet Code - Hybrid/Electric Vehicle Battery 59 Circuit Performance

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: P1B93 Chevrolet indicates Hybrid/Electric Vehicle Battery 59 Circuit Performance.
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 846

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 P1B93 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 P1B93 Chevrolet - Hybrid/Electric Vehicle Battery 59 Circuit Performance - AutoCodes.com — P1B93 Chevrolet Code - Hybrid/Electric Vehicle Battery 59 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1B93 Chevrolet?

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

How to Fix the DTC P1B93 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 P1B93 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 P1B93 Chevrolet Code

1. What does the OBDII code P1B93 mean on a Chevrolet?

P1B93 indicates an issue with the Hybrid/Electric Vehicle Battery 59 Circuit Performance, typically related to one of the battery's internal circuits or its connection.

2. What are the symptoms of a P1B93 code on a Chevrolet hybrid or electric vehicle?

Common symptoms include a check engine light, reduced hybrid system performance, decreased fuel efficiency, or the vehicle entering limp mode.

3. What causes the P1B93 code to be triggered?

This code can be caused by a faulty battery sensor, damaged wiring or connectors in the battery circuit, or a malfunction within the hybrid battery itself.

4. Can I continue driving with a P1B93 code on my Chevrolet?

While the vehicle may still be drivable, itâ€™s not recommended as the hybrid system may not function properly, potentially leading to further damage or reduced performance.

5. How is the P1B93 code diagnosed?

A technician will use a scan tool to confirm the code, check the battery control module, inspect wiring and connectors for damage, and test the battery circuit for irregularities.

6. How do you fix a P1B93 code on a Chevrolet?

Repairs may include replacing a damaged battery sensor, repairing or replacing faulty wiring, or replacing the hybrid battery if internal damage is found.

7. Is the P1B93 code covered under warranty for Chevrolet vehicles?

In some cases, hybrid battery components may be covered under an extended warranty or emissions-related warranty. Check with your dealer for specifics.

8. Can a weak 12V battery cause the P1B93 code?

While unlikely, a weak 12V battery can sometimes cause communication issues in hybrid systems, so itâ€™s worth testing the 12V battery as part of the diagnosis.

9. How much does it cost to fix a P1B93 code on a Chevrolet?

Repair costs can vary significantly, ranging from $100 for simple wiring repairs to thousands of dollars if the hybrid battery needs replacement.

10. Can I clear the P1B93 code myself without repairs?

Clearing the code with a scan tool may temporarily turn off the check engine light, but the issue will likely return if the underlying problem isnâ€™t fixed.