AutoCodes – Chevrolet – P0C84 2018 Chevrolet Silverado

P0C84 2018 Chevrolet Silverado Code - Hybrid/EV Battery Temperature Sensor 8 Circuit High 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: P0C84 2018 Chevrolet Silverado indicates Hybrid/EV Battery Temperature Sensor 8 Circuit High 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 312

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 P0C84 2018 Chevrolet Silverado 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 less than -69°C (-92°F).

OBDII Code P0C84 2018 Chevrolet Silverado - Hybrid/EV Battery Temperature Sensor 8 Circuit High Voltage - AutoCodes.com — P0C84 2018 Chevrolet Silverado Code - Hybrid/EV Battery Temperature Sensor 8 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0C84 2018 Chevrolet Silverado?

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 P0C84 2018 Chevrolet Silverado?

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 P0C84 2018 Chevrolet Silverado 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 P0C84 2018 Chevrolet Silverado code?

Need more information on how to fix the P0C84 2018 Chevrolet Silverado 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 P0C84 2018 Chevrolet Silverado Code

1. What does the OBDII code P0C84 mean on a 2018 Chevrolet Silverado?

P0C84 indicates a problem with the Hybrid/EV Battery Temperature Sensor 8 Circuit, specifically a high voltage condition detected.

2. What are the common symptoms of code P0C84 in a 2018 Chevrolet Silverado?

Symptoms may include warning lights on the dashboard, reduced fuel efficiency, impaired hybrid or EV performance, or limited power mode activation.

3. What causes the P0C84 code in a 2018 Chevrolet Silverado?

Common causes include a faulty battery temperature sensor, damaged wiring or connectors, or issues with the hybrid battery control module.

4. How do I diagnose the P0C84 code in my 2018 Chevrolet Silverado?

To diagnose, use an OBDII scanner to confirm the code, inspect the wiring and connectors for damage, and test the battery temperature sensor for proper functionality.

5. Can driving with code P0C84 damage my 2018 Chevrolet Silverado?

Yes, continued driving can lead to overheating or damage to the hybrid battery system, potentially resulting in costly repairs.

6. How can I fix the P0C84 code on a 2018 Chevrolet Silverado?

Repairs may involve replacing the battery temperature sensor, repairing damaged wiring or connectors, or reprogramming the hybrid battery control module.

7. Is the P0C84 code specific to Chevrolet Silverado hybrids or EVs?

Yes, this code typically applies to hybrid or electric versions of the Silverado equipped with battery temperature monitoring systems.

8. How much does it cost to repair the P0C84 code on a 2018 Chevrolet Silverado?

Repair costs vary but may range from $200-$500 for sensor replacement and labor, depending on the severity of the damage.

9. Can a faulty hybrid battery temperature sensor cause the P0C84 code?

Yes, a malfunctioning temperature sensor is a common cause of this code.

10. Do I need a professional mechanic to fix the P0C84 code on my 2018 Chevrolet Silverado?

While some may troubleshoot wiring issues independently, professional diagnostics and repairs are recommended for hybrid battery systems to ensure safety and accuracy.