AutoCodes – Saturn – P0BA2 Saturn

P0BA2 Saturn Code - Hybrid/Electric Vehicle Battery 21 Circuit High Voltage

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: P0BA2 Saturn indicates Hybrid/Electric Vehicle Battery 21 Circuit High Voltage.
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 889

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
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Code P0BA2 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 P0BA2 Saturn - Hybrid/Electric Vehicle Battery 21 Circuit High Voltage - AutoCodes.com — P0BA2 Saturn Code - Hybrid/Electric Vehicle Battery 21 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0BA2 Saturn?

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

How to Fix the DTC P0BA2 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 P0BA2 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 P0BA2 Saturn Code

1. What are common symptoms of the OBDII code P0BA2 on a Saturn hybrid/electric vehicle?

- Common symptoms include the illumination of the check engine light, reduced fuel efficiency, and potential difficulty starting the vehicle.

2. What does the OBDII code P0BA2 indicate in a Saturn hybrid/electric vehicle?

- The code P0BA2 indicates a 21 circuit high voltage issue related to the hybrid/electric vehicle battery system.

3. What are possible causes of the P0BA2 code on a Saturn hybrid/electric vehicle?

- Possible causes include a faulty high voltage battery, damaged wiring in the battery circuit, or issues with the battery management system.

4. How should I diagnose and repair the P0BA2 code on my Saturn hybrid/electric vehicle?

- Diagnosis typically involves inspecting the high voltage battery system, checking for damaged wiring, and testing the battery cells. Repair may involve replacing the battery or repairing the wiring as needed.

5. Can driving with the P0BA2 code present cause further damage to the vehicle?

- Continuing to drive with the P0BA2 code present can potentially cause damage to the high voltage battery system and may lead to further electrical issues in the vehicle.

6. Is it safe to attempt to reset the P0BA2 code on my Saturn hybrid/electric vehicle?

- While resetting the code may temporarily turn off the check engine light, it is important to diagnose and address the root cause of the issue to prevent further damage and ensure safety.

7. How much does it typically cost to repair the P0BA2 code on a Saturn hybrid/electric vehicle?

- The cost of repairing the P0BA2 code can vary depending on the specific issue, but it may involve expenses related to battery replacement, wiring repairs, and diagnostic labor.

8. Can the P0BA2 code be triggered by a loose connection in the high voltage battery system?

- Yes, a loose or corroded connection in the high voltage battery system can trigger the P0BA2 code due to disruptions in the circuit's voltage levels.

9. Are there any preventive maintenance tips to avoid encountering the P0BA2 code on a Saturn hybrid/electric vehicle?

- Regularly inspecting the high voltage battery system, ensuring proper wiring connections, and following manufacturer-recommended maintenance schedules can help prevent issues leading to the P0BA2 code.

10. Should I attempt to repair the P0BA2 code on my Saturn hybrid/electric vehicle myself, or seek professional help?

- Due to the complexity and safety considerations of working with high voltage systems, it is recommended to seek the expertise of a qualified automotive technician or dealership when dealing with the P0BA2 code on a Saturn hybrid/electric vehicle.