AutoCodes – Cadillac – P1B62 Cadillac

P1B62 Cadillac 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 Cadillac 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 1,102

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

What does this mean?

What are the Possible Causes of the DTC P1B62 Cadillac?

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

How to Fix the DTC P1B62 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 P1B62 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 P1B62 Cadillac Code

1. What are the common symptoms of OBDII code P1B62 in a Cadillac Hybrid/Electric Vehicle?

- Common symptoms include reduced fuel efficiency, loss of power, and the illumination of the check engine light.

2. What can cause the OBDII code P1B62 Cadillac Hybrid/Electric Vehicle Battery 42 Circuit High Voltage?

- This code is typically triggered by high voltage readings in the hybrid/electric vehicle battery circuit.

3. How serious is the OBDII code P1B62 in a Cadillac Hybrid/Electric Vehicle?

- This code indicates a potentially serious issue with the high voltage circuit of the vehicle's battery system and should be addressed promptly.

4. Can I continue driving my Cadillac Hybrid/Electric Vehicle with the P1B62 code?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to further damage to the battery system.

5. What are some possible repair tips for fixing the P1B62 code in a Cadillac Hybrid/Electric Vehicle?

- Repair tips may include checking the high voltage wiring for any damage, inspecting the battery connections, and resetting the battery management system.

6. Is it safe to attempt repairs on the high voltage system related to the P1B62 code by myself?

- Due to the high voltage nature of the system, it is recommended to seek professional help for diagnosing and repairing issues related to this code.

7. How much does it typically cost to repair the OBDII code P1B62 in a Cadillac Hybrid/Electric Vehicle?

- Repair costs can vary depending on the exact cause of the issue, but expect to pay for diagnostic testing, parts, and labor.

8. Can a faulty sensor trigger the P1B62 code in a Cadillac Hybrid/Electric Vehicle?

- While it is possible for a faulty sensor to contribute to this code, it is more commonly associated with issues in the high voltage circuit itself.

9. Will resetting the OBDII code P1B62 in a Cadillac Hybrid/Electric Vehicle make it go away permanently?

- Simply resetting the code may temporarily turn off the check engine light, but if the underlying issue is not addressed, the code is likely to return.

10. How can regular maintenance help prevent the occurrence of the P1B62 code in a Cadillac Hybrid/Electric Vehicle?

- Regular maintenance, such as inspecting the battery system, checking for loose connections, and keeping the system clean, can help prevent issues that may trigger this code.