AutoCodes – Chevrolet – P1B62 Chevrolet

P1B62 Chevrolet 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 Chevrolet 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 1,318

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

What does this mean?

What are the Possible Causes of the DTC P1B62 Chevrolet?

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

How to Fix the DTC P1B62 Chevrolet?

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 Chevrolet 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 Chevrolet Code

1. What does the OBDII code P1B62 mean on a Chevrolet?

P1B62 indicates a "Hybrid/Electric Vehicle Battery 42 Circuit High Voltage" issue, meaning the voltage in a specific battery circuit is higher than expected.

2. What are the common symptoms of the P1B62 code?

Symptoms may include illuminated warning lights (like the check engine or hybrid system warning), reduced fuel efficiency, limited EV mode functionality, or decreased overall vehicle performance.

3. What causes the P1B62 code on a Chevrolet?

Possible causes include a faulty battery module, damaged wiring or connectors in the battery circuit, a malfunctioning battery energy control module, or internal electrical faults in the high-voltage battery system.

4. Can I drive my Chevrolet with the P1B62 code?

Driving with this code is not recommended, as it may lead to further damage or reduced performance of the hybrid/electric system. Seek professional diagnostics and repair as soon as possible.

5. How is the P1B62 code diagnosed?

A technician will use a scan tool to confirm the code, inspect the battery circuit wiring and connectors, check the battery module for faults, and test the battery energy control module for proper operation.

6. What repairs can fix the P1B62 code?

Repairs may include replacing a faulty battery module, repairing or replacing damaged wires/connectors, reprogramming or replacing the battery energy control module, or addressing internal battery faults.

7. Does the P1B62 code always require battery replacement?

No, not always. The issue could be related to wiring, connectors, or control modules rather than the battery itself. A proper diagnosis is essential.

8. How much does it cost to repair the P1B62 code on a Chevrolet?

Repair costs vary widely depending on the exact cause. Wiring repairs or connector replacements may cost a few hundred dollars, while battery module or control module replacements can run into thousands.

9. Can a weak 12V battery trigger the P1B62 code?

A weak 12V battery generally won't cause this specific code, as P1B62 pertains to the high-voltage hybrid/electric battery system, not the auxiliary 12V system.

10. How can I prevent the P1B62 code from occurring again?

Regular maintenance of the hybrid/electric system, inspecting and replacing damaged wiring or connectors, and addressing any warning signs promptly can help prevent the code from reappearing.