AutoCodes – Cadillac – P0BAF Cadillac

P0BAF Cadillac Code - Hybrid/Electric Vehicle Battery 24 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: P0BAF Cadillac indicates Hybrid/Electric Vehicle Battery 24 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 807

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 P0BAF 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 P0BAF Cadillac - Hybrid/Electric Vehicle Battery 24 Circuit Performance - AutoCodes.com — P0BAF Cadillac Code - Hybrid/Electric Vehicle Battery 24 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P0BAF Cadillac?

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

How to Fix the DTC P0BAF 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 P0BAF 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 P0BAF Cadillac Code

What does the OBDII code P0BAF mean on a Cadillac?

The P0BAF code indicates a "Hybrid/Electric Vehicle Battery 24 Circuit Performance" issue, meaning the vehicle's hybrid battery or its associated circuitry is not operating within expected parameters.

What are the common symptoms of the P0BAF code in a Cadillac?

Common symptoms include reduced fuel economy, limited hybrid system performance, a check engine light or hybrid system warning light, and potential loss of electric motor functionality.

What causes the P0BAF code to appear in a Cadillac?

The code can be triggered by issues such as a faulty hybrid battery cell, damaged battery wiring or connectors, malfunctioning battery control module, or excessive internal battery resistance.

Can I drive my Cadillac with the P0BAF code present?

Driving with the P0BAF code may be possible, but it is not recommended as it can lead to reduced performance, potential damage to the hybrid system, and compromised fuel efficiency.

How is the P0BAF code diagnosed?

A technician will use a scan tool to confirm the code, inspect the battery control module, check wiring and connectors for damage, and test the hybrid battery's voltage and performance.

What repairs might fix the P0BAF code on a Cadillac?

Repairs could include replacing the faulty hybrid battery module, repairing or replacing damaged wiring, reprogramming or replacing the battery control module, or cleaning corroded connectors.

Can a weak 12-volt battery cause the P0BAF code?

While unlikely, a weak 12-volt battery can sometimes affect hybrid system diagnostics and performance, so it should be tested and replaced if necessary.

How much does it cost to fix the P0BAF code on a Cadillac?

Repair costs vary widely depending on the issue, ranging from $100 for wiring repairs to several thousand dollars if the hybrid battery needs replacement.

What tools are needed to troubleshoot the P0BAF code?

Diagnosing this code requires a professional-grade OBDII scan tool capable of reading hybrid system data, a multimeter for testing electrical components, and potentially a battery testing device.

Is the P0BAF code specific to Cadillac vehicles?

No, the P0BAF code is a generic OBDII code found in many hybrid and electric vehicles, but its diagnosis and repair may vary depending on the make and model.