AutoCodes – Chevrolet – P1B90 Chevrolet

P1B90 Chevrolet Code - Hybrid/Electric Vehicle Battery 58 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: P1B90 Chevrolet indicates Hybrid/Electric Vehicle Battery 58 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 756

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 P1B90 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 P1B90 Chevrolet - Hybrid/Electric Vehicle Battery 58 Circuit Performance - AutoCodes.com — P1B90 Chevrolet Code - Hybrid/Electric Vehicle Battery 58 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1B90 Chevrolet?

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

How to Fix the DTC P1B90 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 P1B90 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.

Need more information about the P1B90 Chevrolet code?

Need more information on how to fix the P1B90 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1B90 Chevrolet 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 P1B90 Chevrolet Code

1. What does OBDII code P1B90 for a Chevrolet Hybrid/Electric Vehicle Battery 58 Circuit Performance mean?

This code indicates that there is a performance issue with the Hybrid/Electric Vehicle Battery 58 Circuit in your Chevrolet.

2. What are the common symptoms of OBDII code P1B90 in a Chevrolet hybrid/electric vehicle?

Common symptoms include a decrease in fuel efficiency, reduced power output, and potential issues with the vehicle's hybrid/electric system.

3. What are the possible causes of OBDII code P1B90 in a Chevrolet hybrid/electric vehicle?

Causes can include a faulty battery pack, damaged wiring in the circuit, a malfunctioning battery management system, or issues with the hybrid/electric vehicle's control module.

4. How can I diagnose the OBDII code P1B90 in my Chevrolet hybrid/electric vehicle?

Diagnosis typically involves using a scan tool to read the code, inspecting the battery pack and related wiring, and testing the components of the hybrid/electric system.

5. Can I still drive my Chevrolet hybrid/electric vehicle with OBDII code P1B90 present?

It is not recommended to drive the vehicle with this code present, as it can lead to further damage to the hybrid/electric system and potentially unsafe driving conditions.

6. How can I repair OBDII code P1B90 in my Chevrolet hybrid/electric vehicle?

Repair may involve replacing the battery pack, repairing damaged wiring, resetting the battery management system, or reprogramming the control module. It is recommended to seek professional assistance for proper repair.

7. Are there any DIY tips for troubleshooting OBDII code P1B90 in my Chevrolet hybrid/electric vehicle?

While basic inspections like checking for loose connections or damaged wiring can be done, comprehensive diagnosis and repair for this code are best left to trained professionals due to the complexity of hybrid/electric systems.

8. Can a low battery state of charge trigger OBDII code P1B90 in a Chevrolet hybrid/electric vehicle?

Yes, a low battery state of charge can contribute to triggering this code, as it can affect the performance and efficiency of the hybrid/electric system.

9. Is it safe to clear the OBDII code P1B90 in my Chevrolet hybrid/electric vehicle with a scan tool?

Clearing the code may temporarily remove the warning light, but it is crucial to address the underlying issue causing the code to prevent potential safety hazards and further damage to the vehicle.

10. How often should I have my Chevrolet hybrid/electric vehicle inspected for issues like OBDII code P1B90?

Regular maintenance and inspections are recommended to catch issues like this early. Follow the manufacturer's recommended service schedule for your Chevrolet hybrid/electric vehicle to ensure optimal performance and safety.