AutoCodes – Buick – P1B62 Buick

P1B62 Buick Code - Hybrid/Electric Vehicle Battery 42 Circuit High 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: P1B62 Buick indicates Hybrid/Electric Vehicle Battery 42 Circuit High 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 1,161

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 P1B62 Buick 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 P1B62 Buick - Hybrid/Electric Vehicle Battery 42 Circuit High Voltage - AutoCodes.com — P1B62 Buick Code - Hybrid/Electric Vehicle Battery 42 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1B62 Buick?

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

How to Fix the DTC P1B62 Buick?

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 P1B62 Buick 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 P1B62 Buick Code

1. What are the common symptoms of OBDII code P1B62 Buick related to the Hybrid/Electric Vehicle Battery 42 Circuit High Voltage?

- Common symptoms include the illumination of the check engine light, reduced hybrid/electric vehicle performance, and potential issues with the high voltage battery system.

2. What are the possible causes of OBDII code P1B62 Buick indicating a High Voltage circuit issue?

- The code may be triggered by a faulty High Voltage Battery Energy Control Module, damaged wiring in the high voltage circuit, or a malfunctioning high voltage battery pack.

3. How can I diagnose the OBDII code P1B62 Buick related to the High Voltage Battery 42 Circuit High Voltage issue?

- Diagnosing this code may require specialized diagnostic tools to check the high voltage battery system, inspect wiring for damage, and verify the operation of the High Voltage Battery Energy Control Module.

4. Are there any safety precautions to consider when working on the High Voltage Battery system with code P1B62 Buick?

- Extreme caution must be exercised when working on the high voltage battery system. Always follow manufacturer guidelines, wear appropriate safety gear, and consider consulting a professional if unsure.

5. Can I drive my Buick with OBDII code P1B62 related to High Voltage Battery 42 Circuit High Voltage issue?

- It is not recommended to drive the vehicle with this code present, as it can affect the performance and safety of the hybrid/electric system. Have the issue diagnosed and repaired promptly.

6. How can I reset the OBDII code P1B62 Buick after addressing the High Voltage Battery 42 Circuit High Voltage problem?

- The code can be reset using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes. Make sure the underlying issue has been fixed before resetting the code.

7. What repair tips can help resolve OBDII code P1B62 Buick associated with the High Voltage Battery 42 Circuit High Voltage issue?

- Repair tips include checking and repairing damaged wiring, replacing faulty components in the high voltage circuit, and ensuring proper connections in the high voltage battery system.

8. Is it possible to prevent OBDII code P1B62 Buick related to the High Voltage Battery 42 Circuit High Voltage issue?

- Regular maintenance of the high voltage battery system, keeping an eye on warning signs like reduced performance, and addressing any issues promptly can help prevent this code from appearing.

9. How long does it typically take to repair OBDII code P1B62 Buick indicating a High Voltage Battery 42 Circuit High Voltage problem?

- The repair time can vary depending on the exact cause of the issue. Simple repairs like fixing wiring may take a short time, while replacing major components could require more extensive work.

10. Can a DIY enthusiast fix OBDII code P1B62 Buick related to the High Voltage Battery 42 Circuit High Voltage issue?

- While some simple tasks like checking wiring connections can be done by DIY enthusiasts, working on the high voltage battery system requires specialized knowledge and tools, making it best left to professionals.