AutoCodes – Cadillac – P3035 Cadillac

P3035 Cadillac Code - Hybrid/EV Battery Interface Control Module 11 5 V Reference Circuit

Quick Answer

The hybrid battery contains 192 individual cells. Common causes include Faulty Hybrid/EV Battery Interface Control Module, Hybrid/EV Battery Interface Control Module harness is open or shorted, Hybrid/EV Battery Interface Control Module circuit poor electrical connection. 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: P3035 Cadillac indicates Hybrid/EV Battery Interface Control Module 11 5 V Reference Circuit.
Common causes: Common causes include Faulty Hybrid/EV Battery Interface Control Module, Hybrid/EV Battery Interface Control Module harness is open or shorted, Hybrid/EV Battery Interface Control Module circuit poor electrical connection.
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 1,038

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 27, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P3035 Cadillac Description

The hybrid battery contains 192 individual cells. Two cells are welded together in parallel and called a cell group. There are a total of 96 cell groups in the hybrid battery 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 cell groups are joined to form 3 distinct sections. The first 24 battery cell groups make up battery section 1. This section is adjacent to the cowl and contains battery cell groups 73 through 96. The next 28 battery cell groups make up battery section 2. This section is located behind section 1 and contains battery cell groups 45 through 72. The transverse battery section is section number 3 and it contains the remaining 44 battery cell groups 1 through 44. The battery sections also contain two temperature sensors, with one sensor located at each end of the section.
The battery energy control module monitors the voltage of the 96 battery cell groups. The voltage sense lines are attached to each individual cell group, and these sense lines terminate at a connector located on the top surface of the battery section. A voltage sense harness joins this connector to the battery energy control module.
The battery energy control module contains internal interface control modules that monitor specific cell groups.
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 the hybrid powertrain control module 2 through serial data. The hybrid powertrain control module 2 is the host controller for diagnostic trouble code information.

OBDII Code P3035 Cadillac - Hybrid/EV Battery Interface Control Module 11 5 V Reference Circuit - AutoCodes.com — P3035 Cadillac Code - Hybrid/EV Battery Interface Control Module 11 5 V Reference Circuit

What does this mean?

What are the Possible Causes of the DTC P3035 Cadillac?

Faulty Hybrid/EV Battery Interface Control Module
Hybrid/EV Battery Interface Control Module harness is open or shorted
Hybrid/EV Battery Interface Control Module circuit poor electrical connection

How to Fix the DTC P3035 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 P3035 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 P3035 Cadillac Code

1. What are common symptoms of OBDII code P3035 in a Cadillac related to the Hybrid/EV Battery Interface Control Module 11 5 V Reference Circuit?

Symptoms can include poor hybrid system performance, reduced fuel efficiency, and the illumination of the check engine light.

2. What are possible causes of OBDII code P3035 in a Cadillac related to the Hybrid/EV Battery Interface Control Module 11 5 V Reference Circuit?

Potential causes may include a faulty Hybrid/EV Battery Interface Control Module, issues with the 5V reference circuit, wiring problems, or a defective sensor.

3. How can I diagnose OBDII code P3035 in a Cadillac related to the Hybrid/EV Battery Interface Control Module 11 5 V Reference Circuit?

Diagnosis involves using a diagnostic scanner to retrieve the specific fault code, inspecting the wiring and connectors for any damage, testing the voltage output of the 5V reference circuit, and checking the functionality of the control module.

4. Can I drive my Cadillac with OBDII code P3035 related to the Hybrid/EV Battery Interface Control Module 11 5 V Reference Circuit?

It is recommended to address the issue promptly to prevent further damage to the hybrid system. Continued driving with this fault could potentially lead to more severe problems.

5. How can I repair OBDII code P3035 in a Cadillac related to the Hybrid/EV Battery Interface Control Module 11 5 V Reference Circuit?

Repair may involve replacing the Hybrid/EV Battery Interface Control Module, repairing or replacing damaged wiring, addressing any sensor issues, or resetting the system after fixing the problem.

6. Is OBDII code P3035 in a Cadillac related to the Hybrid/EV Battery Interface Control Module 11 5 V Reference Circuit a common issue?

While it may not be as common as some other OBDII codes, issues with the Hybrid/EV Battery Interface Control Module and the 5V reference circuit can occur, especially in hybrid or electric vehicles.

7. How much does it cost to fix OBDII code P3035 in a Cadillac related to the Hybrid/EV Battery Interface Control Module 11 5 V Reference Circuit?

The cost of repair can vary depending on the specific cause of the issue, the labor rates in your area, and whether any parts need to be replaced. It is recommended to get a diagnostic assessment from a qualified mechanic for an accurate estimate.

8. Can a DIY enthusiast fix OBDII code P3035 related to the Hybrid/EV Battery Interface Control Module 11 5 V Reference Circuit?

While some basic troubleshooting steps can be taken by DIY enthusiasts, diagnosing and repairing issues related to hybrid or electric vehicle systems may require specialized knowledge and tools. Seek professional help if needed.

9. Will resetting the OBDII code P3035 related to the Hybrid/EV Battery Interface Control Module 11 5 V Reference Circuit make it go away permanently?

Simply clearing the fault code may not solve the underlying issue causing the code to appear. It is essential to diagnose and fix the root cause of the problem to prevent the code from reoccurring.

10. How long does it take to repair OBDII code P3035 in a Cadillac related to the Hybrid/EV Battery Interface Control Module 11 5 V Reference Circuit?

The repair time can vary depending on the complexity of the issue, the availability of parts, and the skill of the mechanic. Some repairs may be completed in a few hours, while others may take longer if extensive diagnosis and testing are required.