AutoCodes – GMC – P3045 GMC

P3045 GMC Code - Hybrid/EV Battery Interface Control Module 12 Voltage Sensor Circuit Performance Circuit/System Description

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: P3045 GMC indicates Hybrid/EV Battery Interface Control Module 12 Voltage Sensor Circuit Performance Circuit/System Description.
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 965

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 P3045 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 P3045 GMC - Hybrid/EV Battery Interface Control Module 12 Voltage Sensor Circuit Performance Circuit/System Description - AutoCodes.com — P3045 GMC Code - Hybrid/EV Battery Interface Control Module 12 Voltage Sensor Circuit Performance Circuit/System Description

What does this mean?

What are the Possible Causes of the DTC P3045 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 P3045 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 P3045 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 P3045 GMC Code

1. What are the common symptoms of OBDII code P3045 in a GMC related to the Hybrid/EV Battery Interface Control Module 12 Voltage Sensor Circuit Performance?

- Common symptoms may include poor fuel economy, loss of power, illuminated check engine light, and issues with hybrid/EV battery performance.

2. What are the possible causes of OBDII code P3045 in a GMC Hybrid/EV system?

- Possible causes can include faulty Hybrid/EV Battery Interface Control Module, damaged wiring or connectors, low battery voltage, or issues with the 12-voltage sensor circuit.

3. How can I diagnose the OBDII code P3045 in my GMC related to the Hybrid/EV Battery Interface Control Module?

- Diagnosis involves using an OBDII scanner to retrieve the code, inspecting the battery interface control module, checking the wiring and connectors for damage, and testing the 12-voltage sensor circuit.

4. What are some repair tips for fixing OBDII code P3045 in a GMC Hybrid/EV system?

- Repair tips may include repairing or replacing damaged wiring or connectors, testing and replacing the Hybrid/EV Battery Interface Control Module if necessary, and ensuring proper voltage levels in the system.

5. Can I continue driving my GMC with OBDII code P3045 related to the Hybrid/EV Battery Interface Control Module issue?

- It is not recommended to continue driving with this code as it can lead to further damage to the hybrid/EV system. It is best to address the issue promptly.

6. Are there any safety concerns associated with OBDII code P3045 in a GMC Hybrid/EV system?

- While the code itself may not pose immediate safety risks, ignoring the underlying issue can affect the performance and reliability of the hybrid/EV system, potentially compromising vehicle safety.

7. How do I reset the OBDII code P3045 in my GMC after making repairs to the Hybrid/EV Battery Interface Control Module?

- Once repairs are made, the OBDII code can be reset using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes to clear the error code.

8. Will OBDII code P3045 in a GMC reset on its own if the underlying issue is not fixed?

- The code may not reset on its own, even if the symptoms are temporarily alleviated. It is important to address the root cause to prevent further issues.

9. Can a DIY enthusiast fix OBDII code P3045 related to the Hybrid/EV Battery Interface Control Module in a GMC?

- Depending on the individual's skill level and access to tools, some repairs related to this code may be possible for a DIY enthusiast. However, complex electrical issues may require professional diagnosis and repair.

10. How much can I expect to pay for repairs related to OBDII code P3045 in a GMC Hybrid/EV system?

- Repair costs can vary depending on the extent of the issue, parts needed, and labor rates. It is advisable to consult with a qualified mechanic for an accurate cost estimate.