AutoCodes – Cadillac – P1E92 Cadillac

P1E92 Cadillac Code - Hybrid/EV Battery Interface Control Module 1 Cell Balancing Circuit

Quick Answer

To maintain a similar state of charge on the cell groups, the hybrid/EV powertrain control module 2 looks at the cell group voltages and determines which cell groups need energy removed in order to maintain the battery groups at a similar state of charge. Common causes include Faulty Hybrid/EV Battery Interface Control Module, Hybrid/EV Battery Interface Control Module harness is open or shorted, Hybrid/EV Battery Interface Control Module circuit poor electrical connection. 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: P1E92 Cadillac indicates Hybrid/EV Battery Interface Control Module 1 Cell Balancing Circuit.
Common causes: Common causes include Faulty Hybrid/EV Battery Interface Control Module, Hybrid/EV Battery Interface Control Module harness is open or shorted, Hybrid/EV Battery Interface Control Module circuit poor electrical connection.
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 1,087

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 Apr 24, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1E92 Cadillac Description

To maintain a similar state of charge on the cell groups, the hybrid/EV powertrain control module 2 looks at the cell group voltages and determines which cell groups need energy removed in order to maintain the battery groups at a similar state of charge. This is known as cell balancing. There is a resistor wired in parallel with the cell group and a transistor switch in series with the resistor internal to the hybrid/EV battery interface control module. The hybrid/EV powertrain control module 2 sends a command to the hybrid/EV battery energy control module to begin cell balancing through the hybrid/EV battery interface control modules.

OBDII Code P1E92 Cadillac - Hybrid/EV Battery Interface Control Module 1 Cell Balancing Circuit - AutoCodes.com — P1E92 Cadillac Code - Hybrid/EV Battery Interface Control Module 1 Cell Balancing Circuit

What does this mean?

What are the Possible Causes of the DTC P1E92 Cadillac?

Faulty Hybrid/EV Battery Interface Control Module
Hybrid/EV Battery Interface Control Module harness is open or shorted
Hybrid/EV Battery Interface Control Module circuit poor electrical connection

How to Fix the DTC P1E92 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 P1E92 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 P1E92 Cadillac Code

1. What does the OBDII code P1E92 mean on a Cadillac?

The P1E92 code indicates an issue with the Hybrid/EV Battery Interface Control Module 1 Cell Balancing Circuit, which monitors and balances the voltage of the battery cells.

2. What are the common symptoms of a P1E92 code?

Symptoms may include an illuminated check engine light, reduced hybrid/EV performance, decreased fuel efficiency, or the vehicle entering limp mode.

3. What causes the P1E92 code to appear?

Common causes include a malfunctioning battery control module, damaged battery cells, corroded or loose connections, or a software issue.

4. Can I drive my Cadillac with a P1E92 code?

While the vehicle may still be drivable, itâ€™s not recommended because the battery system may not operate efficiently and could cause further damage.

5. How is the P1E92 code diagnosed?

A technician will use a scan tool to read the code, inspect the battery control module, check for damaged wiring, and test individual battery cells for faults.

6. How can the P1E92 code be fixed?

Repairs may include replacing damaged battery cells, repairing or replacing the control module, updating module software, or fixing wiring issues.

7. Is the P1E92 code covered under warranty for my Cadillac?

If the vehicle is still under warranty and the issue is related to the hybrid/EV battery system, the repair may be covered. Check with your dealership for details.

8. Can a dead 12-volt battery trigger the P1E92 code?

A weak or dead 12-volt battery can sometimes cause communication issues with the hybrid/EV system, potentially triggering the code.

9. How much does it cost to repair a P1E92 code?

Repair costs vary widely depending on the specific issue, ranging from $100 for minor wiring repairs to several thousand dollars for battery module replacements.

10. Can the P1E92 code reset itself after fixing the issue?

In some cases, the code may clear automatically after the issue is resolved, but it often requires a scan tool to reset the code and verify the repair.