P0BC4 2014 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 2014 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 2014 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 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 P0BC4 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 P0BC4 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 P0BC4 2014 GMC Sierra code?
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Frequently Asked Questions about P0BC4 2014 GMC Sierra Code
1. What does the OBDII code P0BC4 mean on a 2014 GMC Sierra?
The P0BC4 code indicates a low voltage issue in the Hybrid/EV Battery Temperature Sensor 5 circuit, meaning the vehicle's system has detected an abnormal reading from the sensor.
2. What are the common symptoms of the P0BC4 code?
Symptoms may include reduced hybrid or EV performance, a check engine light, decreased fuel efficiency, or the vehicle entering limp mode.
3. What causes the P0BC4 code to appear?
The code can be caused by a faulty battery temperature sensor, damaged or corroded wiring, a poor electrical connection, or an issue with the hybrid battery control module.
4. Can I continue driving my 2014 GMC Sierra with the P0BC4 code?
It is not recommended to continue driving, as the issue could impact the hybrid battery's operation and lead to further damage or reduced performance.
5. How is the P0BC4 code diagnosed?
A mechanic will use a scan tool to confirm the code, inspect the battery temperature sensor and its wiring, and test the hybrid battery control module for proper functionality.
6. How do I fix the P0BC4 code on my GMC Sierra?
The repair may involve replacing the faulty temperature sensor, repairing or replacing damaged wiring, cleaning corroded connections, or reprogramming the hybrid battery control module.
7. How much does it cost to repair the P0BC4 code?
The cost can vary depending on the root cause but typically ranges from $150 to $500, including parts and labor.
8. Can a dirty or corroded connector cause the P0BC4 code?
Yes, a corroded or dirty connector can disrupt the sensor’s signal, leading to a low voltage reading and triggering the code.
9. Does the P0BC4 code mean the hybrid battery is failing?
Not necessarily. The code specifically relates to the temperature sensor circuit, but if ignored, it could cause issues that affect the hybrid battery over time.
10. Can I clear the P0BC4 code without repairing it?
Clearing the code without addressing the underlying issue will likely result in the code returning, as the fault still exists in the system.
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