AutoCodes – Chevrolet – P0BC4 Chevrolet

P0BC4 Chevrolet 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 Chevrolet 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.

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Code Popularity 566

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 P0BC4 Chevrolet 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 hybrid battery temperature sensor is greater than 160°C (320°F).

OBDII Code P0BC4 Chevrolet - Hybrid/EV Battery Temperature Sensor 5 Circuit Low Voltage - AutoCodes.com — P0BC4 Chevrolet Code - Hybrid/EV Battery Temperature Sensor 5 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P0BC4 Chevrolet?

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 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 P0BC4 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.

Need more information about the P0BC4 Chevrolet code?

Need more information on how to fix the P0BC4 Chevrolet code? Get Access to Factory Service Manuals

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Information for Specific Chevrolet Models

P0BC4 2014 Chevrolet Silverado — Hybrid/EV Battery Temperature Sensor 5 Circuit Low Voltage
P0BC4 2015 Chevrolet Silverado — Hybrid/EV Battery Temperature Sensor 5 Circuit Low Voltage
P0BC4 2016 Chevrolet Silverado — Hybrid/EV Battery Temperature Sensor 5 Circuit Low Voltage
P0BC4 2017 Chevrolet Silverado — Hybrid/EV Battery Temperature Sensor 5 Circuit Low Voltage
P0BC4 2018 Chevrolet Silverado — Hybrid/EV Battery Temperature Sensor 5 Circuit Low Voltage

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 P0BC4 Chevrolet Code

What does the OBDII code P0BC4 indicate for my Chevrolet vehicle?

The code P0BC4 indicates that the Hybrid/EV Battery Temperature Sensor 5 is experiencing a low voltage condition, which can affect the battery management system.

What are common symptoms of the P0BC4 code?

Common symptoms include warning lights on the dashboard, reduced hybrid system performance, and potential overheating of the hybrid battery.

What could cause the P0BC4 code to trigger?

Causes can include a faulty temperature sensor, damaged wiring or connectors, or issues within the hybrid battery management system.

How can I diagnose the P0BC4 code?

To diagnose, start by using an OBDII scanner to confirm the code, then inspect the wiring and connectors for damage. Testing the temperature sensor and checking for other related codes can also help.

Is it safe to drive my Chevrolet with the P0BC4 code?

While you may be able to drive the vehicle, it is not recommended as it could lead to further damage to the hybrid battery system or reduced performance.

What repairs are typically needed to resolve the P0BC4 code?

Repairs may include replacing the faulty temperature sensor, repairing damaged wiring, or addressing issues with the battery management system.

Can I clear the P0BC4 code without fixing the problem?

You can clear the code using an OBDII scanner, but it is essential to address the underlying issue to prevent the code from reappearing.

How much does it typically cost to fix the P0BC4 code?

Repair costs can vary widely based on the cause, but expect to pay between $100 to $500, depending on whether you need a new sensor or wiring repairs.

Will the P0BC4 code affect my vehicleâ€™s fuel economy?

Yes, if the hybrid battery is not functioning properly due to the P0BC4 code, it can lead to decreased fuel efficiency as the system may rely more on the gasoline engine.