AutoCodes – Saturn – P0B90 Saturn

P0B90 Saturn Code - Hybrid/Electric Vehicle Battery 18 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: P0B90 Saturn indicates Hybrid/Electric Vehicle Battery 18 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.

Save to My Repairs My Repairs

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

Code Popularity 845

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 08, 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 P0B90 Saturn 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 P0B90 Saturn - Hybrid/Electric Vehicle Battery 18 Circuit - AutoCodes.com — P0B90 Saturn Code - Hybrid/Electric Vehicle Battery 18 Circuit

What does this mean?

What are the Possible Causes of the DTC P0B90 Saturn?

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

How to Fix the DTC P0B90 Saturn?

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 P0B90 Saturn 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 P0B90 Saturn code?

Need more information on how to fix the P0B90 Saturn code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0B90 Saturn 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 P0B90 Saturn Code

1. What does the OBDII code P0B90 for Saturn Hybrid/Electric Vehicle Battery 18 Circuit indicate?

The code P0B90 specifically points to an issue with the Hybrid/Electric Vehicle Battery 18 Circuit in a Saturn vehicle.

2. What are common symptoms of the P0B90 code in a Saturn Hybrid/Electric Vehicle?

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

3. What are possible causes of the P0B90 code in a Saturn Hybrid/Electric Vehicle?

The code can be triggered by issues such as a faulty hybrid battery pack, damaged electrical wiring in the 18 Circuit, or a malfunctioning battery management system.

4. How can I diagnose the P0B90 code in my Saturn Hybrid/Electric Vehicle?

Diagnosis typically involves using a scan tool to read the code, conducting a visual inspection of the battery and related components, and performing electrical tests to pinpoint the exact cause.

5. Is it safe to continue driving my Saturn with the P0B90 code present?

It is not recommended to drive the vehicle with the P0B90 code active, as it can lead to further damage to the hybrid system and potentially cause a breakdown.

6. Can I repair the P0B90 code in my Saturn Hybrid/Electric Vehicle myself?

Repairing the P0B90 code often requires specialized knowledge and tools related to hybrid/electric vehicle systems, so it is advisable to seek professional help from a certified technician.

7. What are the potential costs associated with fixing the P0B90 code in a Saturn Hybrid/Electric Vehicle?

The costs can vary depending on the exact cause of the issue, but repairing the Hybrid/Electric Vehicle Battery 18 Circuit in a Saturn vehicle can range from a few hundred to a few thousand dollars.

8. Are there any maintenance tips to prevent the recurrence of the P0B90 code in my Saturn Hybrid/Electric Vehicle?

Regularly inspecting the hybrid battery pack, keeping up with scheduled maintenance, and avoiding extreme driving conditions can help prevent issues that trigger the P0B90 code.

9. Can the P0B90 code be related to other codes or issues in a Saturn Hybrid/Electric Vehicle?

The P0B90 code can sometimes be accompanied by other hybrid system-related codes, so it is important to address all codes and diagnose the entire system thoroughly.

10. How long does it typically take to repair the P0B90 code in a Saturn Hybrid/Electric Vehicle?

The repair time can vary based on the exact cause of the issue, but it may take anywhere from a few hours to a few days to fully resolve the P0B90 code and restore the vehicle's functionality.