AutoCodes – Saturn – P1E5C Saturn

P1E5C Saturn Code - Hybrid/Electric Vehicle Battery 49 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: P1E5C Saturn indicates Hybrid/Electric Vehicle Battery 49 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 854

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 P1E5C 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 P1E5C Saturn - Hybrid/Electric Vehicle Battery 49 Circuit - AutoCodes.com — P1E5C Saturn Code - Hybrid/Electric Vehicle Battery 49 Circuit

What does this mean?

What are the Possible Causes of the DTC P1E5C Saturn?

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

How to Fix the DTC P1E5C 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 P1E5C 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 P1E5C Saturn Code

1. What does the OBDII code P1E5C mean on a Saturn?

P1E5C indicates an issue with the Hybrid/Electric Vehicle Battery 49 Circuit, often related to a fault in the batteryâ€™s voltage sensing or communication.

2. What are the common symptoms of P1E5C in a Saturn?

Symptoms may include the check engine light turning on, reduced hybrid or electric performance, poor fuel economy, or the vehicle entering limp mode.

3. What causes the P1E5C code to appear in a Saturn?

This code can be caused by a faulty battery sensor, damaged wiring or connectors in the battery circuit, or a malfunctioning hybrid battery control module.

4. Can I drive my Saturn if the P1E5C code is present?

Driving with this code is not recommended, as it could lead to further damage to the hybrid/electric system or reduced vehicle performance.

5. How can I diagnose the P1E5C code on my Saturn?

Diagnosis typically involves using a scan tool to check for related codes, inspecting the battery circuit wiring and connectors, and testing the hybrid control module and battery voltage sensors.

6. What repairs are needed to fix the P1E5C code on a Saturn?

Repairs could include replacing a damaged battery sensor, repairing or replacing faulty wiring, or reprogramming or replacing the hybrid battery control module.

7. How much does it cost to fix the P1E5C code on a Saturn?

The repair cost depends on the exact issue but can range from $100 for minor wiring repairs to over $1,000 if the hybrid control module or battery requires replacement.

8. Can a software update fix the P1E5C code on a Saturn?

In some cases, a software update for the hybrid control module may resolve the issue if the problem is related to a programming error.

9. How can I prevent the P1E5C code from recurring on my Saturn?

Regular maintenance, including checking battery connections, inspecting wiring for damage, and ensuring proper module updates, can help prevent this code from recurring.

10. Is the P1E5C code specific to Saturn vehicles?

While it is commonly seen in Saturn hybrid or electric vehicles, the code may also apply to other brands using similar hybrid systems with a Battery 49 Circuit.