AutoCodes – GMC – P3043 GMC

P3043 GMC 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 GMC 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 1,456

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 GMC 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 GMC - Hybrid/EV Battery Interface Control Module 12 Voltage Sensor Circuit Low Voltage - AutoCodes.com — P3043 GMC 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 GMC?

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 GMC?

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 GMC 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 GMC Code

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

- Common symptoms include poor fuel efficiency, decreased engine performance, and potential issues with the hybrid or electric drive system.

2. What are some possible causes of OBDII code P3043 GMC Hybrid/EV Battery Interface Control Module 12 Voltage Sensor Circuit Low Voltage?

- Possible causes may include a faulty hybrid/EV battery interface control module, a malfunctioning voltage sensor, wiring issues, or a weak battery.

3. How can I diagnose the OBDII code P3043 in my GMC hybrid vehicle?

- Diagnosis typically involves using an OBDII scanner to retrieve the code, conducting a visual inspection of wiring and connectors, and testing the voltage sensor and control module.

4. Is it safe to continue driving with OBDII code P3043 present in my GMC hybrid/EV vehicle?

- It is not recommended to continue driving with this code present, as it can lead to further damage to the hybrid or electric drive system. Seek professional help for diagnosis and repair.

5. Can I repair OBDII code P3043 GMC Hybrid/EV Battery Interface Control Module 12 Voltage Sensor Circuit Low Voltage myself?

- Repairing this code may require specialized knowledge and tools. It is recommended to consult a qualified technician or dealership for proper diagnosis and repair.

6. How much does it typically cost to repair OBDII code P3043 in a GMC hybrid vehicle?

- The cost of repair can vary depending on the specific cause of the issue. It is advisable to get a diagnostic assessment from a certified mechanic to determine the exact cost.

7. Are there any preventive maintenance tips to avoid OBDII code P3043 in my GMC hybrid/EV vehicle?

- Regularly checking the health of the hybrid/EV battery system, maintaining proper charging habits, and addressing any warning signs promptly can help prevent issues leading to this code.

8. Can a low car battery voltage trigger OBDII code P3043 in a GMC hybrid vehicle?

- Yes, a weak or low car battery can potentially trigger this code as it can affect the voltage sensor readings and overall performance of the hybrid/EV system.

9. Is resetting the OBDII code P3043 in my GMC hybrid vehicle a temporary solution?

- Resetting the code may temporarily clear the warning light, but if the underlying issue is not addressed, the code is likely to reappear. It is essential to diagnose and fix the root cause.

10. How long does it take to repair OBDII code P3043 related to the Hybrid/EV Battery Interface Control Module 12 Voltage Sensor Circuit Low Voltage in a GMC?

- The repair time can vary based on the complexity of the issue and the availability of parts. It is advisable to consult with a professional technician for a more accurate estimate.