AutoCodes – GMC – P1E73 GMC

P1E73 GMC Code - Hybrid/Electric Vehicle Battery 72 Circuit

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: P1E73 GMC indicates Hybrid/Electric Vehicle Battery 72 Circuit.
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 812

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 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1E73 GMC 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 P1E73 GMC - Hybrid/Electric Vehicle Battery 72 Circuit - AutoCodes.com — P1E73 GMC Code - Hybrid/Electric Vehicle Battery 72 Circuit

What does this mean?

What are the Possible Causes of the DTC P1E73 GMC?

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

How to Fix the DTC P1E73 GMC?

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 P1E73 GMC 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 P1E73 GMC Code

1. What are the common symptoms of OBDII code P1E73 GMC related to Hybrid/Electric Vehicle Battery 72 Circuit?

- Common symptoms include reduced hybrid system performance, poor fuel efficiency, and potential issues with the vehicle's battery charging.

2. What are some possible causes of OBDII code P1E73 GMC indicating an issue with the Hybrid/Electric Vehicle Battery 72 Circuit?

- Possible causes include a faulty battery pack, damaged wiring in the battery circuit, or issues with the battery management system.

3. How can I diagnose the Hybrid/Electric Vehicle Battery 72 Circuit issue associated with OBDII code P1E73 GMC?

- Diagnosis typically involves using a diagnostic scanner to read the code, inspecting the battery connections, checking for damaged wiring, and testing the battery pack's voltage.

4. Can I drive my vehicle with OBDII code P1E73 GMC triggered for Hybrid/Electric Vehicle Battery 72 Circuit?

- It is not recommended to drive the vehicle with this code triggered, as it can lead to further damage to the hybrid system and potentially cause safety issues.

5. What are the repair options for resolving OBDII code P1E73 GMC related to Hybrid/Electric Vehicle Battery 72 Circuit?

- Repair options may include replacing the battery pack, repairing damaged wiring, resetting the battery management system, or seeking assistance from a qualified technician.

6. Are there any DIY tips for troubleshooting OBDII code P1E73 GMC indicating an issue with the Hybrid/Electric Vehicle Battery 72 Circuit?

- DIY tips may include checking the battery connections for tightness, inspecting for visible damage to the wiring, and ensuring the battery pack is properly charged.

7. How can I prevent OBDII code P1E73 GMC from recurring in relation to the Hybrid/Electric Vehicle Battery 72 Circuit?

- Regular maintenance of the hybrid system, monitoring the battery's health, and addressing any warning signs promptly can help prevent the code from recurring.

8. Is it safe to clear OBDII code P1E73 GMC without addressing the underlying issue with the Hybrid/Electric Vehicle Battery 72 Circuit?

- Clearing the code without addressing the underlying issue is not recommended, as it may lead to ongoing problems with the hybrid system and compromise vehicle safety.

9. Can extreme weather conditions impact the triggering of OBDII code P1E73 GMC for Hybrid/Electric Vehicle Battery 72 Circuit?

- Yes, extreme temperatures can affect the performance of the hybrid battery and potentially trigger the code, so it's important to monitor the system during such conditions.

10. How long does it typically take to repair OBDII code P1E73 GMC associated with the Hybrid/Electric Vehicle Battery 72 Circuit?

- The repair time can vary depending on the exact cause of the issue, but it may range from a few hours to a day, especially if complex diagnostic procedures are required.