AutoCodes – Saturn – P1E74 Saturn

P1E74 Saturn Code - Hybrid/Electric Vehicle Battery 73 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: P1E74 Saturn indicates Hybrid/Electric Vehicle Battery 73 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 851

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 P1E74 Saturn 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 P1E74 Saturn - Hybrid/Electric Vehicle Battery 73 Circuit - AutoCodes.com — P1E74 Saturn Code - Hybrid/Electric Vehicle Battery 73 Circuit

What does this mean?

What are the Possible Causes of the DTC P1E74 Saturn?

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

How to Fix the DTC P1E74 Saturn?

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 P1E74 Saturn 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 P1E74 Saturn Code

1. What are the common symptoms of OBDII code P1E74 on a Saturn hybrid/electric vehicle?

- Common symptoms include reduced vehicle performance, decreased fuel efficiency, and potential issues with the hybrid/electric battery system.

2. What could cause the OBDII code P1E74 to appear in a Saturn hybrid/electric vehicle?

- The code P1E74 typically indicates a fault in the Hybrid/Electric Vehicle Battery 73 Circuit, which could be caused by a wiring issue, a faulty battery cell, or a problem with the battery management system.

3. How can I diagnose the OBDII code P1E74 on my Saturn hybrid/electric vehicle?

- Diagnosing the code P1E74 may require specialized diagnostic tools to check the hybrid/electric battery system, inspect wiring connections, and perform voltage tests on individual battery cells.

4. Is it safe to continue driving my Saturn with the OBDII code P1E74 present?

- It is not recommended to continue driving your Saturn with the code P1E74 present, as it could lead to further damage to the hybrid/electric battery system and potentially unsafe driving conditions.

5. What are some repair tips for fixing the OBDII code P1E74 on a Saturn hybrid/electric vehicle?

- Repair tips may include checking and repairing any damaged wiring, replacing faulty battery cells, resetting the battery management system, and ensuring proper connection of the battery components.

6. Can I reset the OBDII code P1E74 on my Saturn without addressing the underlying issue?

- While you can temporarily clear the code with an OBDII scanner, it is important to address the underlying issue causing the code to prevent further problems with the hybrid/electric battery system.

7. How much does it typically cost to repair the OBDII code P1E74 on a Saturn hybrid/electric vehicle?

- The cost of repairing the code P1E74 can vary depending on the extent of the issue, but it may involve expenses for diagnostic testing, replacement parts, and labor costs.

8. Are there any recalls or service bulletins related to the OBDII code P1E74 in Saturn hybrid/electric vehicles?

- It is recommended to check with Saturn dealerships or online resources for any recalls or service bulletins related to the code P1E74 to see if there are known issues or remedies provided by the manufacturer.

9. How often should I have the hybrid/electric battery system in my Saturn inspected to prevent OBDII code P1E74 from occurring?

- Regular maintenance and inspections of the hybrid/electric battery system are recommended to prevent issues like the OBDII code P1E74. It is advisable to follow the manufacturer's recommended maintenance schedule.

10. Can a DIY enthusiast with automotive knowledge repair the OBDII code P1E74 on a Saturn hybrid/electric vehicle?

- While some DIY enthusiasts may have the skills to diagnose and repair simple issues related to the code P1E74, complex problems with the hybrid/electric battery system may require specialized knowledge and tools best handled by professionals.