AutoCodes – Generic – P1B67

P1B67 Code - Hybrid/Electric Vehicle Battery 44 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: P1B67 indicates Hybrid/Electric Vehicle Battery 44 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 1,130

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 P1B67 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 P1B67 - Hybrid/Electric Vehicle Battery 44 Circuit Low Voltage - AutoCodes.com — P1B67 Code - Hybrid/Electric Vehicle Battery 44 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1B67?

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

How to Fix the DTC P1B67?

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 P1B67 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.

Need more information about the P1B67 code?

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Need Help with the Code?

Get the P1B67 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1B67 Buick — Hybrid/Electric Vehicle Battery 44 Circuit Low Voltage
P1B67 Cadillac — Hybrid/Electric Vehicle Battery 44 Circuit Low Voltage
P1B67 Chevrolet — Hybrid/Electric Vehicle Battery 44 Circuit Low Voltage
P1B67 GMC — Hybrid/Electric Vehicle Battery 44 Circuit Low Voltage
P1B67 Saturn — Hybrid/Electric Vehicle Battery 44 Circuit Low Voltage

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 P1B67 Code

1. What are common symptoms of OBDII code P1B67 (Hybrid/Electric Vehicle Battery 44 Circuit Low Voltage)?

- Common symptoms include decreased hybrid/EV performance, reduced fuel efficiency, and potential warning lights on the dashboard.

2. What are the possible causes of OBDII code P1B67?

- The code P1B67 can be triggered by issues such as a failing hybrid battery, damaged battery cells, poor electrical connections, or a faulty battery management system.

3. How can I diagnose the cause of OBDII code P1B67?

- Diagnosing the cause of P1B67 typically involves using a diagnostic scanner to read the code, checking the hybrid battery voltage levels, inspecting electrical connections, and performing a battery health check.

4. Can I still drive my vehicle with OBDII code P1B67 active?

- It is not recommended to drive your vehicle with code P1B67 active, as it can lead to further damage to the hybrid/EV system. It's best to address the issue promptly.

5. How can I repair OBDII code P1B67?

- Repair options for P1B67 include replacing the hybrid battery, repairing damaged electrical connections, resetting the battery management system, or seeking assistance from a professional mechanic.

6. Are there any DIY tips to troubleshoot OBDII code P1B67?

- DIY troubleshooting tips for P1B67 include checking the hybrid battery connections, ensuring proper battery cooling, and monitoring the battery voltage levels using a multimeter.

7. Is it safe to reset the OBDII code P1B67 using a diagnostic tool?

- Resetting the code using a diagnostic tool may temporarily clear the warning light, but it's crucial to address the underlying issue causing P1B67 to prevent further damage to the hybrid system.

8. How much does it cost to repair OBDII code P1B67 at a dealership or repair shop?

- The cost of repairing P1B67 can vary depending on the root cause of the issue, but it may involve expenses for parts, labor, and diagnostic services. It's advisable to obtain quotes from multiple sources.

9. Can a faulty hybrid battery cause OBDII code P1B67?

- Yes, a failing hybrid battery with low voltage or damaged cells can trigger code P1B67 due to the inadequate power supply to the hybrid/EV system.

10. What precautions should I take when dealing with OBDII code P1B67 on a hybrid or electric vehicle?

- When facing P1B67 on a hybrid or electric vehicle, it's essential to prioritize safety, avoid driving the vehicle if possible, seek professional assistance, and follow manufacturer guidelines for repairs and maintenance.