AutoCodes – Cadillac – P1BA1 Cadillac

P1BA1 Cadillac Code - Hybrid/Electric Vehicle Battery 63 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: P1BA1 Cadillac indicates Hybrid/Electric Vehicle Battery 63 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 851

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
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Code P1BA1 Cadillac 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 P1BA1 Cadillac - Hybrid/Electric Vehicle Battery 63 Circuit High Voltage - AutoCodes.com — P1BA1 Cadillac Code - Hybrid/Electric Vehicle Battery 63 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1BA1 Cadillac?

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

How to Fix the DTC P1BA1 Cadillac?

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 P1BA1 Cadillac 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 P1BA1 Cadillac Code

1. What are the common symptoms of OBDII code P1BA1 in a Cadillac Hybrid/Electric Vehicle?

- Common symptoms include the check engine light illuminating, decreased fuel efficiency, and potential drivability issues.

2. What can cause the OBDII code P1BA1 to trigger in a Cadillac Hybrid/Electric Vehicle?

- The code P1BA1 typically triggers due to issues with the high voltage circuit in the hybrid/electric vehicle battery system.

3. How serious is the OBDII code P1BA1 in a Cadillac Hybrid/Electric Vehicle?

- The code P1BA1 can be serious as it pertains to the high voltage circuit, which is crucial for the proper functioning of the hybrid/electric vehicle.

4. What should I do if my Cadillac Hybrid/Electric Vehicle shows the OBDII code P1BA1?

- It is recommended to have the vehicle diagnosed by a qualified technician to pinpoint the exact cause of the high voltage circuit issue.

5. Can I continue driving my Cadillac Hybrid/Electric Vehicle with the OBDII code P1BA1 present?

- It is not advisable to continue driving the vehicle with the code P1BA1 present to prevent potential damage to the hybrid/electric vehicle system.

6. How can I repair the OBDII code P1BA1 in my Cadillac Hybrid/Electric Vehicle?

- Repairing the code P1BA1 may involve inspecting and repairing any faults in the high voltage circuit, replacing damaged components, or resetting the system.

7. Is it possible to reset the OBDII code P1BA1 in a Cadillac Hybrid/Electric Vehicle without professional help?

- While some minor issues may be resolved by resetting the code, it is recommended to have a professional diagnose and repair the underlying cause.

8. How can I prevent the OBDII code P1BA1 from reoccurring in my Cadillac Hybrid/Electric Vehicle?

- Regular maintenance of the hybrid/electric vehicle system, prompt repairs of any related issues, and following manufacturer guidelines can help prevent the code from reoccurring.

9. Are there any safety precautions to take when dealing with the OBDII code P1BA1 in a Cadillac Hybrid/Electric Vehicle?

- Safety precautions include disconnecting the high voltage system, wearing appropriate protective gear, and following proper procedures outlined in the vehicle manual.

10. Can the OBDII code P1BA1 in a Cadillac Hybrid/Electric Vehicle be indicative of a larger problem with the vehicle's electrical system?

- Yes, the code P1BA1 can indicate potential issues with the vehicle's electrical system, particularly the high voltage components in a hybrid/electric vehicle.