AutoCodes – GMC – P1E50 GMC

P1E50 GMC Code - Hybrid/Electric Vehicle Battery 37 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: P1E50 GMC indicates Hybrid/Electric Vehicle Battery 37 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 791

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 23, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1E50 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 P1E50 GMC - Hybrid/Electric Vehicle Battery 37 Circuit - AutoCodes.com — P1E50 GMC Code - Hybrid/Electric Vehicle Battery 37 Circuit

What does this mean?

What are the Possible Causes of the DTC P1E50 GMC?

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

How to Fix the DTC P1E50 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 P1E50 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 P1E50 GMC Code

1. What does the OBDII code P1E50 mean on a GMC vehicle?

P1E50 indicates a fault in the Hybrid/Electric Vehicle Battery 37 Circuit, which relates to the monitoring or functioning of a specific battery cell or circuit in the hybrid or electric vehicle's battery pack.

2. What are the common symptoms of code P1E50 in a GMC?

Symptoms may include a check engine light or hybrid system warning, reduced fuel efficiency, limited power mode, or the inability to use the electric drive system.

3. What causes the P1E50 code to appear on a GMC?

Potential causes include a faulty battery cell, damaged or corroded wiring in the battery circuit, a malfunctioning battery energy control module, or poor electrical connections.

4. Can I drive my GMC with the P1E50 code?

Driving with the P1E50 code is not recommended, as it could lead to further damage to the hybrid battery system or leave the vehicle stranded if the electric drive system fails completely.

5. How is the P1E50 code diagnosed on a GMC vehicle?

A technician will use a scan tool to retrieve the code, inspect the battery circuit wiring and connections, and perform voltage or resistance tests on the affected circuit and battery cells.

6. What repairs are commonly needed for a P1E50 code?

Repairs may include replacing a faulty battery cell, repairing or replacing damaged wiring or connectors, or reprogramming or replacing the battery energy control module.

7. How much does it cost to fix the P1E50 code on a GMC?

Repair costs can vary widely depending on the extent of the issue, ranging from $200 for simple wiring repairs to several thousand dollars if the battery pack or control module needs replacement.

8. Can low battery voltage cause the P1E50 code?

Yes, low or imbalanced battery voltage within the hybrid battery pack can trigger the P1E50 code due to improper circuit operation or monitoring errors.

9. Does the P1E50 code require the entire hybrid battery to be replaced?

Not always; sometimes only a single faulty battery cell or a specific circuit needs repair, but a full battery replacement may be necessary if the damage is extensive.

10. How can I prevent the P1E50 code from occurring on my GMC?

Regular maintenance, keeping the hybrid battery cooling system clean and functional, and addressing warning lights promptly can help prevent issues leading to the P1E50 code.