AutoCodes – GMC – P0C34 GMC

P0C34 GMC Code - Hybrid/EV Battery Temperature Sensor 6 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: P0C34 GMC indicates Hybrid/EV Battery Temperature Sensor 6 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 689

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 P0C34 GMC 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 P0C34 GMC - Hybrid/EV Battery Temperature Sensor 6 Performance - AutoCodes.com — P0C34 GMC Code - Hybrid/EV Battery Temperature Sensor 6 Performance

What does this mean?

What are the Possible Causes of the DTC P0C34 GMC?

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 P0C34 GMC?

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 P0C34 GMC 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 P0C34 GMC code?

Need more information on how to fix the P0C34 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

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Information for Specific GMC Models

P0C34 2014 GMC Sierra — Hybrid/EV Battery Temperature Sensor 6 Performance
P0C34 2015 GMC Sierra — Hybrid/EV Battery Temperature Sensor 6 Performance
P0C34 2016 GMC Sierra — Hybrid/EV Battery Temperature Sensor 6 Performance
P0C34 2017 GMC Sierra — Hybrid/EV Battery Temperature Sensor 6 Performance
P0C34 2018 GMC Sierra — Hybrid/EV Battery Temperature Sensor 6 Performance

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 P0C34 GMC Code

1. What are the common symptoms of OBDII code P0C34 in a GMC vehicle?

The common symptoms of OBDII code P0C34 related to Hybrid/EV Battery Temperature Sensor 6 Performance in a GMC vehicle may include poor fuel efficiency, reduced power, and warning lights on the dashboard.

2. What causes the OBDII code P0C34 related to Hybrid/EV Battery Temperature Sensor 6 Performance in a GMC?

The OBDII code P0C34 in a GMC is typically triggered by a faulty Hybrid/EV Battery Temperature Sensor 6, wiring issues, or a problem within the hybrid or electric battery system.

3. How can I diagnose the OBDII code P0C34 in my GMC related to Hybrid/EV Battery Temperature Sensor 6 Performance?

Diagnosing the OBDII code P0C34 involves using a diagnostic scanner to retrieve the code, inspecting the Hybrid/EV Battery Temperature Sensor 6 and its wiring for any damage, and testing the battery temperature sensor's functionality.

4. Can I continue driving my GMC with the OBDII code P0C34 related to Hybrid/EV Battery Temperature Sensor 6 Performance?

It is not recommended to continue driving your GMC with the OBDII code P0C34 present, as it can lead to further damage to the hybrid or electric battery system and potentially affect the vehicle's performance.

5. How can I repair the OBDII code P0C34 in my GMC related to Hybrid/EV Battery Temperature Sensor 6 Performance?

Repairing the OBDII code P0C34 may involve replacing the Hybrid/EV Battery Temperature Sensor 6, repairing any damaged wiring, or addressing any underlying issues within the hybrid or electric battery system.

6. Are there any DIY tips for addressing the OBDII code P0C34 related to Hybrid/EV Battery Temperature Sensor 6 Performance in my GMC?

While diagnosing and repairing the OBDII code P0C34 may require specialized tools and knowledge, basic DIY tips include checking for loose connections, ensuring proper battery connections, and inspecting for visible damage.

7. How much does it typically cost to repair the OBDII code P0C34 in a GMC related to Hybrid/EV Battery Temperature Sensor 6 Performance?

The cost of repairing the OBDII code P0C34 can vary depending on the extent of the issue, the labor rates in your area, and the cost of parts. It is recommended to consult with a professional mechanic for an accurate estimate.

8. Can a faulty Hybrid/EV Battery Temperature Sensor 6 cause other issues in my GMC besides triggering the OBDII code P0C34?

Yes, a faulty Hybrid/EV Battery Temperature Sensor 6 can cause other issues in your GMC, such as incorrect temperature readings, improper charging of the hybrid or electric battery, and potential damage to the battery system.

9. How long does it typically take to repair the OBDII code P0C34 related to Hybrid/EV Battery Temperature Sensor 6 Performance in a GMC?

The repair time for the OBDII code P0C34 can vary depending on the exact cause of the issue, the availability of parts, and the mechanic's experience. It is advisable to consult with a professional for a more accurate timeframe.

10. Is it safe to drive my GMC if the OBDII code P0C34 related to Hybrid/EV Battery Temperature Sensor 6 Performance keeps coming back after repairs?

If the OBDII code P0C34 continues to reappear after repairs, it is not safe to drive your GMC, as it indicates that the underlying issue has not been fully resolved. Continuing to drive the vehicle in this state can lead to further problems with the hybrid or electric battery system.