AutoCodes – Cadillac – P1E59 Cadillac

P1E59 Cadillac Code - Hybrid/Electric Vehicle Battery 46 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: P1E59 Cadillac indicates Hybrid/Electric Vehicle Battery 46 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 717

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 P1E59 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 P1E59 Cadillac - Hybrid/Electric Vehicle Battery 46 Circuit - AutoCodes.com — P1E59 Cadillac Code - Hybrid/Electric Vehicle Battery 46 Circuit

What does this mean?

What are the Possible Causes of the DTC P1E59 Cadillac?

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

How to Fix the DTC P1E59 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 P1E59 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 P1E59 Cadillac Code

1. What are the common symptoms of OBDII code P1E59 in a Cadillac Hybrid/Electric Vehicle?

- Common symptoms include reduced battery performance, difficulty starting the vehicle, and potential loss of power while driving.

2. What could cause the OBDII code P1E59 in a Cadillac Hybrid/Electric Vehicle?

- The code P1E59 typically indicates a fault in the Hybrid/Electric Vehicle Battery 46 Circuit, which can be caused by battery cell issues, wiring faults, or a malfunctioning battery management system.

3. How can I diagnose the OBDII code P1E59 in my Cadillac Hybrid/Electric Vehicle?

- Diagnosing the code P1E59 often requires specialized diagnostic tools to analyze the battery system, check for faulty wiring, and inspect the battery cells for any signs of damage or degradation.

4. Can I still drive my Cadillac Hybrid/Electric Vehicle with the OBDII code P1E59?

- It is not recommended to drive your vehicle with the code P1E59, as it can lead to further damage to the battery system and potentially compromise your safety on the road.

5. How can I repair the OBDII code P1E59 in my Cadillac Hybrid/Electric Vehicle?

- Repairing the code P1E59 may involve replacing faulty battery cells, repairing wiring issues, or recalibrating the battery management system. It is recommended to have the repair done by a qualified technician.

6. Are there any maintenance tips to prevent the OBDII code P1E59 in my Cadillac Hybrid/Electric Vehicle?

- Regularly inspecting the battery system, following the manufacturer's maintenance schedule, and avoiding extreme temperature conditions can help prevent issues that may trigger the code P1E59.

7. Can a DIY enthusiast fix the OBDII code P1E59 in a Cadillac Hybrid/Electric Vehicle?

- Due to the complexity of hybrid/electric vehicle systems and the potential safety risks involved, it is recommended to have the code P1E59 diagnosed and repaired by a professional technician with experience in hybrid vehicle maintenance.

8. How much does it cost to repair the OBDII code P1E59 in a Cadillac Hybrid/Electric Vehicle?

- The cost of repairing the code P1E59 can vary depending on the extent of the damage, parts needed for replacement, and labor costs. It is advisable to get a quote from a reputable repair shop.

9. Can the OBDII code P1E59 be a recurring issue in a Cadillac Hybrid/Electric Vehicle?

- If the root cause of the code P1E59 is not properly addressed during repairs, it can potentially recur. Regular maintenance and addressing any underlying issues promptly can help prevent the code from reappearing.

10. Is it safe to reset the OBDII code P1E59 in a Cadillac Hybrid/Electric Vehicle without repairing the underlying issue?

- Resetting the code without addressing the underlying problem can temporarily clear the error code, but it will not fix the root cause of the issue and may lead to further complications with the battery system.