AutoCodes – Cadillac – P1BAF Cadillac

P1BAF Cadillac Code - Hybrid/Electric Vehicle Battery 68 Circuit Low 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: P1BAF Cadillac indicates Hybrid/Electric Vehicle Battery 68 Circuit Low 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 747

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 P1BAF 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 P1BAF Cadillac - Hybrid/Electric Vehicle Battery 68 Circuit Low Voltage - AutoCodes.com — P1BAF Cadillac Code - Hybrid/Electric Vehicle Battery 68 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1BAF Cadillac?

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

How to Fix the DTC P1BAF 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 P1BAF 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 P1BAF Cadillac Code

1. What are the common symptoms of OBDII code P1BAF in a Cadillac hybrid/electric vehicle?

- Common symptoms include reduced electric driving range, difficulty starting the vehicle, illuminated warning lights on the dashboard, and overall decreased performance.

2. What are the possible causes of OBDII code P1BAF indicating a low voltage in the Hybrid/Electric Vehicle Battery 68 Circuit?

- Possible causes may include a faulty battery cell, issues with the battery management system, poor electrical connections, or a problem with the charging system.

3. How can I diagnose the OBDII code P1BAF in my Cadillac hybrid/electric vehicle?

- Diagnosis typically involves using a diagnostic scanner to retrieve the specific code, checking the battery voltage levels, inspecting the battery connections, and conducting a thorough visual inspection of the battery components.

4. Can I continue driving my Cadillac with the OBDII code P1BAF present?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to further damage to the electrical system and potentially leave you stranded if the battery voltage drops too low.

5. What are some repair tips for fixing OBDII code P1BAF in a Cadillac hybrid/electric vehicle?

- Repair tips may include checking and tightening battery connections, testing the battery cells individually, replacing any faulty components, and ensuring proper charging of the battery.

6. Is it safe to attempt DIY repairs for OBDII code P1BAF in a Cadillac hybrid/electric vehicle?

- While some basic inspections and maintenance tasks can be performed by DIY enthusiasts, it is recommended to consult with a professional technician or specialized hybrid/electric vehicle mechanic for more complex repairs related to the battery system.

7. How much does it typically cost to repair OBDII code P1BAF in a Cadillac hybrid/electric vehicle?

- The cost of repairs can vary depending on the specific issue causing the low voltage in the battery circuit. It is advisable to get a diagnostic assessment from a qualified technician to determine the exact repair costs.

8. Can a low voltage issue indicated by OBDII code P1BAF affect the overall performance of my Cadillac hybrid/electric vehicle?

- Yes, a low voltage issue can significantly impact the performance of the vehicle, leading to reduced driving range, sluggish acceleration, and potential drivability issues.

9. Are there any preventive maintenance measures to avoid OBDII code P1BAF in a Cadillac hybrid/electric vehicle?

- Regularly inspecting the battery system, following the manufacturer's recommended maintenance schedule, and ensuring proper charging habits can help prevent issues that may trigger the P1BAF trouble code.

10. How urgent is it to address OBDII code P1BAF in a Cadillac hybrid/electric vehicle?

- It is advisable to address the issue promptly to prevent further damage to the battery system and ensure the safe operation of the vehicle. Ignoring the low voltage condition indicated by P1BAF can lead to more severe problems down the line.