P0BC4 2015 GMC Sierra Code - Hybrid/EV Battery Temperature Sensor 5 Circuit Low Voltage
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
- P0BC4 2015 GMC Sierra indicates Hybrid/EV Battery Temperature Sensor 5 Circuit Low Voltage.
- 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.
Code P0BC4 2015 GMC Sierra Description
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 hybrid battery temperature sensor is greater than 160°C (320°F).
What are the Possible Causes of the DTC P0BC4 2015 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 P0BC4 2015 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 P0BC4 2015 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.
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Frequently Asked Questions about P0BC4 2015 GMC Sierra Code
1. What does the OBDII code P0BC4 mean on a 2015 GMC Sierra?
The P0BC4 code indicates a "Hybrid/EV Battery Temperature Sensor 5 Circuit Low Voltage," meaning the vehicle's hybrid battery management system has detected a low voltage issue in the temperature sensor circuit for sensor 5.
2. What are the symptoms of code P0BC4 in a 2015 GMC Sierra?
Symptoms may include an illuminated check engine light, reduced hybrid system performance, decreased fuel efficiency, or the vehicle entering a "limp mode."
3. What causes the P0BC4 code to appear on a GMC Sierra?
Common causes include a faulty battery temperature sensor, damaged or corroded wiring or connectors in the sensor circuit, or issues with the hybrid battery control module.
4. Can I drive my 2015 GMC Sierra with the P0BC4 code?
While the vehicle may still be drivable, it is not recommended to ignore the issue as it could lead to further damage to the hybrid battery system or reduced performance.
5. How is the P0BC4 code diagnosed on a 2015 GMC Sierra?
A technician will use a scan tool to confirm the code, inspect the wiring and connectors for damage, and test the battery temperature sensor and related circuits for proper functionality.
6. How do you fix the P0BC4 code on a GMC Sierra?
Repairs typically involve replacing the faulty battery temperature sensor, repairing damaged wiring or connectors, or reprogramming or replacing the hybrid battery control module if necessary.
7. How much does it cost to repair a P0BC4 code on a GMC Sierra?
Costs vary depending on the exact issue but may range from $100 to $500 for sensor replacement or $1,000+ if the hybrid battery control module requires replacement.
8. Can a low hybrid battery charge trigger the P0BC4 code?
No, the code specifically relates to the temperature sensor circuit voltage and not the state of charge of the hybrid battery.
9. How do I prevent the P0BC4 code from recurring in my GMC Sierra?
Regular maintenance, inspecting the hybrid battery components for wear or damage, and promptly addressing warning lights can help prevent this code from recurring.
10. Will resetting the check engine light clear the P0BC4 code?
Resetting the light may temporarily clear the code, but the underlying issue must be addressed to prevent the code from returning.
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