AutoCodes – GMC – P0BC3 2014 GMC Sierra

P0BC3 2014 GMC Sierra 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 2014 GMC Sierra 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 155

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 2014 GMC Sierra 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 2014 GMC Sierra - Hybrid/EV Battery Temperature Sensor 5 Performance - AutoCodes.com — P0BC3 2014 GMC Sierra Code - Hybrid/EV Battery Temperature Sensor 5 Performance

What does this mean?

What are the Possible Causes of the DTC P0BC3 2014 GMC Sierra?

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 2014 GMC Sierra?

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 2014 GMC Sierra 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 2014 GMC Sierra code?

Need more information on how to fix the P0BC3 2014 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 P0BC3 2014 GMC Sierra Code

1. What does the OBDII code P0BC3 mean on a 2014 GMC Sierra?

The P0BC3 code indicates a performance issue with Hybrid/EV Battery Temperature Sensor 5, which monitors the temperature of the hybrid battery pack.

2. What are the common symptoms of the P0BC3 code?

Common symptoms include a check engine light, reduced fuel efficiency, limited hybrid/EV operation, or the vehicle entering limp mode.

3. What causes the P0BC3 code to appear?

Possible causes include a faulty battery temperature sensor, damaged wiring or connectors, a malfunctioning hybrid battery control module, or overheating of the battery.

4. Can the P0BC3 code damage my 2014 GMC Sierra?

This code itself won't directly cause damage, but prolonged battery overheating or ignoring the issue may lead to battery degradation or failure.

5. How do I diagnose the P0BC3 code?

Diagnosis involves scanning for additional codes, inspecting the temperature sensor and wiring for damage, and testing the sensor's resistance and output signals.

6. How can I fix the P0BC3 code?

Repairs may include replacing the faulty temperature sensor, repairing damaged wiring or connectors, or recalibrating the hybrid battery control module.

7. Can I drive my 2014 GMC Sierra with the P0BC3 code?

Driving with this code is possible, but itâ€™s not recommended as it may result in reduced performance or further damage to the hybrid battery system.

8. How much does it cost to fix the P0BC3 code?

Repair costs vary but generally range from $100 to $300 for sensor replacement. More extensive repairs, like replacing the hybrid battery, could cost significantly more.

9. Is the P0BC3 code covered under warranty for a 2014 GMC Sierra?

This depends on your vehicleâ€™s warranty coverage; hybrid system components may have extended warranties. Check with your GMC dealer for details.

10. Can a software update resolve the P0BC3 code?

In some cases, a software update for the hybrid battery control module may resolve the issue, but this should be confirmed after thorough diagnostics.