AutoCodes – GMC – P1B93 GMC

P1B93 GMC 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 GMC 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 856

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

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

What does this mean?

What are the Possible Causes of the DTC P1B93 GMC?

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

How to Fix the DTC P1B93 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 P1B93 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.

Need more information about the P1B93 GMC code?

Need more information on how to fix the P1B93 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1B93 GMC code diagnosed by a professional: Find a repair shop in your area

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 GMC Code

What does the OBDII code P1B93 mean for my GMC vehicle?

The OBDII code P1B93 indicates a performance issue in the hybrid or electric vehicle battery circuit, specifically related to the 59 circuit.

What are the common symptoms of the P1B93 code?

Common symptoms include reduced power, poor fuel economy, warning lights on the dashboard, and the vehicle may enter a reduced performance mode.

What could cause the P1B93 code to trigger?

The code can be triggered by issues such as a faulty battery module, poor connections in the battery circuit, or problems with the battery management system.

How can I diagnose the P1B93 code?

To diagnose the P1B93 code, use an OBDII scanner to confirm the code, check the battery voltage and connections, and inspect the battery management system for faults.

What are some repair tips for fixing the P1B93 code?

Repairs may involve checking and tightening electrical connections, replacing faulty battery modules, or updating the battery management system software.

Is it safe to drive my vehicle with the P1B93 code?

While it might be safe to drive for a short distance, it is advisable to have the vehicle inspected as continuing to drive could damage the hybrid or electric battery system.

Can I clear the P1B93 code myself?

Yes, you can clear the code using an OBDII scanner, but it is important to address the underlying issue to prevent the code from returning.

Will the P1B93 code affect my vehicle's warranty?

If the vehicle is still under warranty, having the P1B93 code addressed by a certified technician may be covered, depending on the warranty terms.

How much might it cost to repair the issue related to the P1B93 code?

Repair costs can vary widely depending on the specific issue but may range from a few hundred to several thousand dollars, especially if battery replacement is needed.