AutoCodes – Saturn – P0B55 Saturn

P0B55 Saturn Code - Hybrid/Electric Vehicle Battery 6 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: P0B55 Saturn indicates Hybrid/Electric Vehicle Battery 6 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 965

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 P0B55 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 P0B55 Saturn - Hybrid/Electric Vehicle Battery 6 Circuit Performance - AutoCodes.com — P0B55 Saturn Code - Hybrid/Electric Vehicle Battery 6 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P0B55 Saturn?

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

How to Fix the DTC P0B55 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 P0B55 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.

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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 P0B55 Saturn Code

1. What are the common symptoms of OBDII code P0B55 in a Saturn hybrid/electric vehicle?

- Common symptoms include poor fuel efficiency, reduced power, and the hybrid/electric system not functioning properly.

2. What are some possible causes of OBDII code P0B55 in a Saturn hybrid/electric vehicle?

- Possible causes include a faulty hybrid/electric vehicle battery, issues with the battery management system, or wiring problems in the battery circuit.

3. How can I diagnose OBDII code P0B55 in my Saturn hybrid/electric vehicle?

- Diagnosing this code typically involves using a scan tool to read the specific error codes and conducting a thorough inspection of the hybrid/electric vehicle battery system.

4. Can I drive my Saturn hybrid/electric vehicle with OBDII code P0B55?

- It is not recommended to continue driving your vehicle with this code present, as it may lead to further damage to the hybrid/electric system.

5. How can I repair OBDII code P0B55 in my Saturn hybrid/electric vehicle?

- Repairing this code may involve replacing the hybrid/electric vehicle battery, addressing any issues with the battery management system, or repairing faulty wiring in the battery circuit.

6. Is it safe to attempt repairing OBDII code P0B55 in my Saturn hybrid/electric vehicle myself?

- Repairing this code may require specialized knowledge and tools, so it is recommended to consult a qualified mechanic or dealership experienced in hybrid/electric vehicle repairs.

7. Can a low-quality aftermarket battery cause OBDII code P0B55 in a Saturn hybrid/electric vehicle?

- Yes, using a low-quality or incompatible aftermarket battery can potentially trigger this code due to improper performance or compatibility issues.

8. How often should I have the hybrid/electric vehicle battery system in my Saturn inspected to prevent OBDII code P0B55?

- It is recommended to have the hybrid/electric vehicle battery system inspected regularly as part of routine maintenance to help prevent issues like OBDII code P0B55.

9. Are there any specific driving habits that can help prevent OBDII code P0B55 in a Saturn hybrid/electric vehicle?

- Maintaining a consistent and moderate driving style, avoiding rapid acceleration and braking, and keeping the hybrid/electric system well-maintained can help prevent issues leading to this code.

10. Can extreme weather conditions affect the likelihood of OBDII code P0B55 appearing in a Saturn hybrid/electric vehicle?

- Yes, extreme temperatures or weather conditions can impact the performance of the hybrid/electric vehicle battery system, potentially leading to issues like OBDII code P0B55.