AutoCodesCadillac – P0B6F Cadillac

P0B6F Cadillac Code - Hybrid/Electric Vehicle Battery 11 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
P0B6F Cadillac indicates Hybrid/Electric Vehicle Battery 11 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 1,093
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 08, 2020
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Code P0B6F 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 P0B6F Cadillac - Hybrid/Electric Vehicle Battery 11 Circuit Low Voltage - AutoCodes.com
P0B6F Cadillac Code - Hybrid/Electric Vehicle Battery 11 Circuit Low Voltage

What are the Possible Causes of the DTC P0B6F Cadillac?

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

How to Fix the DTC P0B6F 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 P0B6F 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 P0B6F Cadillac Code

What does OBDII code P0B6F mean on a Cadillac?

Code P0B6F indicates a low voltage issue in the Hybrid/Electric Vehicle Battery 11 circuit, which typically refers to one of the battery module circuits in the hybrid or electric system.

What are the common symptoms of code P0B6F in a Cadillac?

Common symptoms include reduced fuel efficiency, a warning light on the dashboard, limited hybrid system performance, or the vehicle entering limp mode.

What causes the P0B6F code to appear on a Cadillac?

Causes may include a faulty battery module, damaged wiring or connectors in the battery circuit, a malfunctioning battery control module, or excessive resistance in the circuit.

How do I diagnose the P0B6F code on my Cadillac?

Diagnose the issue by using a scan tool to monitor battery voltage levels, inspecting wiring and connectors for damage, and testing the affected battery module for proper operation.

Can I drive my Cadillac with the P0B6F code?

It’s not recommended to drive with this code active, as it may lead to reduced hybrid functionality or further damage to the battery system.

How is the P0B6F code repaired on a Cadillac?

Repairs can include replacing the faulty battery module, repairing or replacing damaged wiring, cleaning or reconnecting loose connectors, or reprogramming the battery control module if needed.

How much does it cost to fix the P0B6F code on a Cadillac?

Repair costs vary, but replacing a battery module can range from $500 to $2,000 or more, depending on labor and parts. Wiring repairs may cost significantly less.

Can a weak 12-volt battery cause the P0B6F code?

While the 12-volt battery itself is unlikely to cause this code, an issue in the hybrid battery system or its circuits is more likely the culprit.

What tools are needed to troubleshoot the P0B6F code?

You’ll need an OBDII scan tool capable of reading hybrid system codes, a multimeter for testing voltages, and possibly manufacturer-specific diagnostic software.

Can a software update fix the P0B6F code on a Cadillac?

In some cases, a software update for the battery control module may resolve the issue, but this depends on the root cause of the problem.

Discuss the causes and fixes for P0B6F Cadillac OBDII Code

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