AutoCodes – Cadillac – P0B68 Cadillac

P0B68 Cadillac Code - Hybrid/Electric Vehicle Battery 10 Circuit

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: P0B68 Cadillac indicates Hybrid/Electric Vehicle Battery 10 Circuit.
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 928

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 P0B68 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 P0B68 Cadillac - Hybrid/Electric Vehicle Battery 10 Circuit - AutoCodes.com — P0B68 Cadillac Code - Hybrid/Electric Vehicle Battery 10 Circuit

What does this mean?

What are the Possible Causes of the DTC P0B68 Cadillac?

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

How to Fix the DTC P0B68 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 P0B68 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 P0B68 Cadillac Code

1. What are the common symptoms of OBDII code P0B68 in a Cadillac Hybrid/Electric vehicle?

- Common symptoms include reduced hybrid system performance, decreased fuel efficiency, and potential illumination of the check engine light.

2. What are the possible causes of OBDII code P0B68 in a Cadillac Hybrid/Electric vehicle?

- The code P0B68 typically indicates an issue with the Hybrid/Electric Vehicle Battery 10 Circuit, which could be caused by a faulty battery pack, damaged wiring, or a problem with the battery management system.

3. How can I diagnose the OBDII code P0B68 in my Cadillac Hybrid/Electric vehicle?

- Diagnosis may involve using an OBDII scanner to retrieve the code, inspecting the high voltage battery pack and related components, and conducting voltage and continuity tests on the circuit.

4. Is it safe to continue driving my Cadillac with OBDII code P0B68 present?

- It is not recommended to drive the vehicle with code P0B68 present, as it can lead to further damage to the hybrid system and may result in unsafe driving conditions.

5. What are some repair tips for addressing OBDII code P0B68 in a Cadillac Hybrid/Electric vehicle?

- Repair tips may include checking and repairing any damaged wiring, replacing the Hybrid/Electric Vehicle Battery 10 Circuit components if needed, and resetting the fault code after repairs are completed.

6. Can I reset the OBDII code P0B68 in my Cadillac Hybrid/Electric vehicle by disconnecting the battery?

- While disconnecting the battery may reset the code temporarily, it is recommended to diagnose and address the underlying issue causing the code to prevent it from reoccurring.

7. How much does it typically cost to repair OBDII code P0B68 in a Cadillac Hybrid/Electric vehicle?

- The cost of repairing code P0B68 can vary depending on the extent of the issue, parts needed for replacement, and labor costs. It is advisable to consult a professional technician for an accurate estimate.

8. Can a DIY enthusiast repair OBDII code P0B68 in a Cadillac Hybrid/Electric vehicle?

- While some basic diagnostics and repairs may be possible for experienced DIY enthusiasts, addressing code P0B68 often requires specialized knowledge and tools related to hybrid/electric vehicle systems. It is recommended to seek professional help for this issue.

9. How often does OBDII code P0B68 occur in Cadillac Hybrid/Electric vehicles?

- The occurrence of code P0B68 can vary depending on the vehicle's age, maintenance history, and driving conditions. Regular maintenance and monitoring of the hybrid system can help prevent this code from appearing.

10. Are there any recalls or technical service bulletins related to OBDII code P0B68 in Cadillac Hybrid/Electric vehicles?

- It is advisable to check with the Cadillac dealership or online resources for any recalls or technical service bulletins related to code P0B68 to see if there are any known issues or solutions provided by the manufacturer.