AutoCodes – Chevrolet – P3045 Chevrolet

P3045 Chevrolet 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 Chevrolet 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 1,171

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

1. What does OBDII code P3045 for a Chevrolet Hybrid/EV Battery Interface Control Module 12 Voltage Sensor Circuit Performance indicate?

The code P3045 indicates a performance issue in the circuit/system of the 12-voltage sensor within the Hybrid/EV battery interface control module.

2. What are the common symptoms of OBDII code P3045 in a Chevrolet?

Common symptoms of code P3045 may include reduced hybrid/EV system performance, decreased fuel efficiency, and potential illumination of the Check Engine Light.

3. What are the possible causes of OBDII code P3045 in a Chevrolet?

Possible causes of code P3045 can include a faulty Hybrid/EV battery interface control module, damaged wiring or connectors in the 12-voltage sensor circuit, or issues with the voltage sensor itself.

4. How can I diagnose OBDII code P3045 for a Chevrolet effectively?

To diagnose code P3045, it is recommended to use an OBDII scanner to retrieve the specific fault code and then perform a thorough inspection of the Hybrid/EV battery interface control module, wiring, and connectors for any signs of damage or corrosion.

5. Can I continue driving my Chevrolet with OBDII code P3045 present?

It is not advisable to continue driving your vehicle with OBDII code P3045 present, as it can lead to further damage to the Hybrid/EV system and potentially affect the overall performance and safety of the vehicle.

6. How can I repair OBDII code P3045 in a Chevrolet?

Repairing code P3045 may involve replacing the Hybrid/EV battery interface control module, repairing or replacing damaged wiring or connectors in the 12-voltage sensor circuit, or addressing any issues with the voltage sensor itself.

7. Are there any DIY tips for fixing OBDII code P3045 in a Chevrolet?

While some basic troubleshooting steps can be taken, diagnosing and repairing code P3045 may require specialized tools and expertise, so it is recommended to seek professional assistance for an accurate diagnosis and repair.

8. How much does it typically cost to repair OBDII code P3045 in a Chevrolet?

The cost of repairing code P3045 can vary depending on the extent of the issue, the parts needed for replacement, and the labor costs involved. It is recommended to obtain quotes from reputable automotive shops for an accurate estimate.

9. Can OBDII code P3045 be a recurring issue in a Chevrolet?

If the root cause of code P3045 is not properly addressed during the repair process, it can potentially recur. It is crucial to ensure that all related components are thoroughly inspected and any underlying issues are resolved to prevent the code from reoccurring.

10. Is it necessary to reset the OBDII system after repairing code P3045 in a Chevrolet?

After repairing code P3045, it is recommended to clear the OBDII system using a diagnostic scanner to reset the Check Engine Light and ensure that the repair was successful.