AutoCodes – GMC – P0BC3 GMC

P0BC3 GMC Code - Hybrid/EV Battery Temperature Sensor 5 Performance

Quick Answer

Hybrid/EV Battery Temperature Sensors are used to monitor the battery temperature. Common causes include Faulty Hybrid/EV Battery Assembly, Hybrid/EV Battery Assembly harness is open or shorted, Hybrid/EV Battery Assembly 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: P0BC3 GMC indicates Hybrid/EV Battery Temperature Sensor 5 Performance.
Common causes: Common causes include Faulty Hybrid/EV Battery Assembly, Hybrid/EV Battery Assembly harness is open or shorted, Hybrid/EV Battery Assembly 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 599

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 Mar 22, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0BC3 GMC Description

Hybrid/EV Battery Temperature Sensors are used to monitor the battery temperature. The non-serviceable battery temperature sensors are located within the battery sections. Two temperature sensors are located in each battery section. The temperature sensor is a variable resistor that measures the temperature of the battery cell group. The hybrid/EV interface control module supplies 5 V to the signal circuit and is a ground for the low reference circuit. The battery temperature sensor resistance changes with battery temperature. As the temperature decreases, the sensor resistance increases. As the temperature increases, the sensor resistance decreases.
Each Hybrid/EV Battery Interface Control Module communicates the temperature sensor values to the Hybrid/EV Powertrain Control Module via serial data.
The Hybrid/EV Powertrain Control Module uses the battery temperature sensors to determine the Hybrid/EV Battery Module temperature in order to control the battery cooling system operation.
The Diagnostic Trouble Code (DTC) will be set when the difference between a single battery temperature sensor and an average of the other battery temperature sensors is greater than 25°C (45°F).

OBDII Code P0BC3 GMC - Hybrid/EV Battery Temperature Sensor 5 Performance - AutoCodes.com — P0BC3 GMC Code - Hybrid/EV Battery Temperature Sensor 5 Performance

What does this mean?

What are the Possible Causes of the DTC P0BC3 GMC?

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

How to Fix the DTC P0BC3 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 P0BC3 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.

Need more information about the P0BC3 GMC code?

Need more information on how to fix the P0BC3 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

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Information for Specific GMC Models

P0BC3 2014 GMC Sierra — Hybrid/EV Battery Temperature Sensor 5 Performance
P0BC3 2015 GMC Sierra — Hybrid/EV Battery Temperature Sensor 5 Performance
P0BC3 2016 GMC Sierra — Hybrid/EV Battery Temperature Sensor 5 Performance
P0BC3 2017 GMC Sierra — Hybrid/EV Battery Temperature Sensor 5 Performance
P0BC3 2018 GMC Sierra — Hybrid/EV Battery Temperature Sensor 5 Performance

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 P0BC3 GMC Code

1. What are common symptoms of OBDII code P0BC3 in a GMC related to the Hybrid/EV Battery Temperature Sensor 5 Performance?

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

2. What are possible causes of OBDII code P0BC3 in a GMC indicating an issue with Hybrid/EV Battery Temperature Sensor 5 Performance?

- Possible causes include a faulty temperature sensor, wiring issues, software glitches, or issues with the hybrid/EV battery system.

3. How can I diagnose the cause of OBDII code P0BC3 in my GMC related to the Hybrid/EV Battery Temperature Sensor 5 Performance?

- Diagnosis typically involves using a diagnostic scanner to read the code, checking the sensor and its wiring for any visible damage, and testing the sensor's functionality.

4. Is it safe to continue driving with OBDII code P0BC3 indicating an issue with the Hybrid/EV Battery Temperature Sensor 5 Performance in my GMC?

- It is not recommended to drive with this code present, as it can lead to further damage to the hybrid/EV battery system and affect the vehicle's performance.

5. How can I repair OBDII code P0BC3 related to the Hybrid/EV Battery Temperature Sensor 5 Performance in my GMC?

- Repair options may include replacing the faulty temperature sensor, repairing any damaged wiring, updating software, or seeking professional assistance for a comprehensive diagnosis and repair.

6. Can a DIY enthusiast fix OBDII code P0BC3 indicating an issue with the Hybrid/EV Battery Temperature Sensor 5 Performance in a GMC?

- Depending on the individual's skills and knowledge, some DIY enthusiasts may be able to address simple issues like sensor replacement or basic wiring repairs. However, complex problems may require professional expertise.

7. How important is it to address OBDII code P0BC3 in a GMC related to the Hybrid/EV Battery Temperature Sensor 5 Performance promptly?

- It is crucial to address this code promptly to prevent further damage to the hybrid/EV battery system, ensure optimal vehicle performance, and avoid potential safety risks.

8. Can extreme temperatures or weather conditions affect the performance of the Hybrid/EV Battery Temperature Sensor 5 in a GMC, triggering OBDII code P0BC3?

- Yes, extreme temperatures can impact the sensor's performance and trigger this code. It is essential to maintain the battery system within the recommended temperature range.

9. Will resetting the OBDII code P0BC3 related to Hybrid/EV Battery Temperature Sensor 5 Performance in a GMC resolve the issue?

- Resetting the code may temporarily clear the warning light, but it will not fix the underlying problem. It is crucial to diagnose and address the root cause for a permanent solution.

10. Are there any preventive maintenance tips to avoid encountering OBDII code P0BC3 in a GMC due to issues with the Hybrid/EV Battery Temperature Sensor 5 Performance?

- Regularly checking and maintaining the hybrid/EV battery system, monitoring temperature sensor functionality, and following manufacturer-recommended maintenance schedules can help prevent such issues.