AutoCodes – Cadillac – P1E5B Cadillac

P1E5B Cadillac Code - Hybrid/Electric Vehicle Battery 48 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: P1E5B Cadillac indicates Hybrid/Electric Vehicle Battery 48 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 627

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 P1E5B Cadillac 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 P1E5B Cadillac - Hybrid/Electric Vehicle Battery 48 Circuit - AutoCodes.com — P1E5B Cadillac Code - Hybrid/Electric Vehicle Battery 48 Circuit

What does this mean?

What are the Possible Causes of the DTC P1E5B Cadillac?

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

How to Fix the DTC P1E5B 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 P1E5B 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 P1E5B Cadillac Code

1. What are common symptoms of OBDII code P1E5B in a Cadillac Hybrid/Electric Vehicle?

- Common symptoms include reduced hybrid system performance, illuminated warning lights on the dashboard, and issues with battery charging.

2. What is the main cause of the OBDII code P1E5B related to the Hybrid/Electric Vehicle Battery 48 Circuit in a Cadillac?

- The main cause of this code is typically a malfunction or fault within the Battery 48 Circuit, which may involve wiring issues or a problem with the battery itself.

3. How can I diagnose the OBDII code P1E5B in my Cadillac Hybrid/Electric Vehicle?

- It is recommended to use a diagnostic scanner to retrieve the specific code and then conduct a thorough inspection of the Battery 48 Circuit components, including the battery, wiring, and connections.

4. Are there any DIY repair tips for addressing the OBDII code P1E5B in a Cadillac Hybrid/Electric Vehicle?

- DIY repair options may include checking and tightening any loose connections, inspecting the wiring for damage, and ensuring the battery is securely in place. However, complex issues may require professional assistance.

5. Can driving with the OBDII code P1E5B present cause further damage to the Cadillac Hybrid/Electric Vehicle?

- Continuing to drive with this code present can potentially lead to further damage to the hybrid system and may result in reduced performance or complete system failure over time.

6. Is it safe to reset the OBDII code P1E5B in a Cadillac Hybrid/Electric Vehicle without addressing the underlying issue?

- While resetting the code may temporarily turn off the warning light, it is not recommended as the underlying issue causing the code may still persist and lead to ongoing problems.

7. How much does it typically cost to repair the OBDII code P1E5B related to the Hybrid/Electric Vehicle Battery 48 Circuit in a Cadillac?

- The cost of repairs can vary depending on the exact cause of the issue, but it is advisable to budget for potential diagnostic fees, replacement parts, and labor costs.

8. Can a faulty Battery 48 Circuit impact the overall efficiency of a Cadillac Hybrid/Electric Vehicle?

- Yes, a malfunctioning Battery 48 Circuit can impact the efficiency of the hybrid system, leading to decreased fuel economy and overall performance issues.

9. Are there any recalls or technical service bulletins related to the OBDII code P1E5B in Cadillac Hybrid/Electric Vehicles?

- It is recommended to check with a Cadillac dealership or online resources for any recalls or technical service bulletins specific to the OBDII code P1E5B affecting the Hybrid/Electric Vehicle Battery 48 Circuit.

10. How often should the Battery 48 Circuit be inspected and maintained in a Cadillac Hybrid/Electric Vehicle to prevent the occurrence of the OBDII code P1E5B?

- Regular maintenance schedules for hybrid/electric vehicles typically include periodic inspections of the Battery 48 Circuit to detect and address any potential issues before they escalate into fault codes like P1E5B.