AutoCodes – Chevrolet – P3043 Chevrolet

P3043 Chevrolet Code - Hybrid/EV Battery Interface Control Module 12 Voltage Sensor Circuit Low Voltage

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: P3043 Chevrolet indicates Hybrid/EV Battery Interface Control Module 12 Voltage Sensor Circuit Low Voltage.
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 1,123

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 May 16, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P3043 Chevrolet 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 P3043 Chevrolet - Hybrid/EV Battery Interface Control Module 12 Voltage Sensor Circuit Low Voltage - AutoCodes.com — P3043 Chevrolet Code - Hybrid/EV Battery Interface Control Module 12 Voltage Sensor Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P3043 Chevrolet?

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 P3043 Chevrolet?

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 P3043 Chevrolet 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 P3043 Chevrolet Code

1. What are common symptoms of OBDII code P3043 in a Chevrolet related to the Hybrid/EV Battery Interface Control Module 12 Voltage Sensor Circuit Low Voltage?

- Common symptoms include poor fuel efficiency, reduced engine performance, and the illumination of the check engine light.

2. What are the possible causes of OBDII code P3043 in a Chevrolet Hybrid/EV vehicle?

- Possible causes include a faulty battery interface control module, damaged wiring or connectors, low battery voltage, or issues with the voltage sensor itself.

3. How can I diagnose the OBDII code P3043 in my Chevrolet Hybrid/EV vehicle?

- Diagnosis typically involves using a scan tool to retrieve the specific fault code, checking the battery interface control module and related wiring for damage, and testing the voltage sensor for proper functionality.

4. What are some repair tips for addressing OBDII code P3043 in a Chevrolet Hybrid/EV vehicle?

- Repair tips may include repairing or replacing damaged wiring or connectors, testing and replacing the voltage sensor if necessary, and resetting the fault code to see if it reoccurs.

5. Is it safe to continue driving my Chevrolet with OBDII code P3043 related to the Hybrid/EV Battery Interface Control Module issue?

- It is generally not recommended to continue driving the vehicle with this fault code present, as it can lead to further damage and potential safety issues. It is best to address the issue promptly.

6. Can OBDII code P3043 in a Chevrolet Hybrid/EV vehicle be fixed without professional help?

- While some DIY enthusiasts may be able to diagnose and repair this issue themselves, it is often recommended to seek professional help, especially when dealing with complex electrical systems in hybrid or electric vehicles.

7. How much does it typically cost to repair OBDII code P3043 in a Chevrolet Hybrid/EV vehicle?

- The cost of repairs can vary depending on the specific cause of the issue, but it may range from a few hundred to over a thousand dollars, especially if components like the battery interface control module need to be replaced.

8. Can a low battery voltage cause OBDII code P3043 in a Chevrolet Hybrid/EV vehicle?

- Yes, a low battery voltage can be a contributing factor to triggering this fault code, as it may affect the proper functioning of the voltage sensor in the Hybrid/EV Battery Interface Control Module.

9. Will resetting the fault code for OBDII code P3043 in a Chevrolet Hybrid/EV vehicle permanently fix the issue?

- Resetting the fault code may temporarily turn off the check engine light, but if the underlying issue causing the fault code is not addressed, it is likely to reappear. It is important to diagnose and fix the root cause of the problem.

10. Are there any recalls or technical service bulletins related to OBDII code P3043 in Chevrolet Hybrid/EV vehicles?

- It is advisable to check with a Chevrolet dealership or visit the manufacturer's website to see if there are any recalls or technical service bulletins related to OBDII code P3043 specifically for your vehicle model.