Engine-CodesGMC – P0AC7 2016 GMC Sierra

P0AC7 2016 GMC Sierra Code - Hybrid/EV Battery Temperature Sensor 2 Circuit Low Voltage

Quick Answer

The P0AC7 diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates a problem with the Hybrid/EV Battery Temperature Sensor 2 Circuit registering low voltage. Common causes include Faulty Hybrid/EV Battery Temperature Sensor 2, Damaged wiring or connectors in the sensor circuit, Corrosion or poor connections in the sensor circuit. 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
P0AC7 2016 GMC Sierra indicates Hybrid/EV Battery Temperature Sensor 2 Circuit Low Voltage.
Common causes
Common causes include Faulty Hybrid/EV Battery Temperature Sensor 2, Damaged wiring or connectors in the sensor circuit, Corrosion or poor connections in the sensor circuit.
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.
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code P0AC7 2016 GMC Sierra Description

The P0AC7 diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates a problem with the Hybrid/EV Battery Temperature Sensor 2 Circuit registering low voltage. In hybrid and electric vehicles, the battery temperature sensor plays a crucial role in monitoring the temperature of the battery pack to ensure optimal performance, efficiency, and safety. When the sensor detects low voltage in the circuit, it suggests that there may be an issue with accurately measuring the battery temperature, which can lead to various problems.

OBDII Code P0AC7 2016 GMC Sierra - Hybrid/EV Battery Temperature Sensor 2 Circuit Low Voltage
P0AC7 2016 GMC Sierra Code - Hybrid/EV Battery Temperature Sensor 2 Circuit Low Voltage

Common Causes of P0AC7 2016 GMC Sierra

  1. Faulty Hybrid/EV Battery Temperature Sensor 2
  2. Damaged wiring or connectors in the sensor circuit
  3. Corrosion or poor connections in the sensor circuit
  4. Issues with the battery management system
  5. Environmental factors affecting sensor performance

Symptoms of P0AC7 2016 GMC Sierra

  1. Reduced fuel efficiency
  2. Decreased electric driving range
  3. Warning light on the dashboard
  4. Inaccurate battery temperature readings
  5. Potential overheating of the battery pack

How to Fix P0AC7 2016 GMC Sierra

  1. Begin by diagnosing the specific cause of the low voltage in the Hybrid/EV Battery Temperature Sensor 2 Circuit using a diagnostic scanner.
  2. Inspect the sensor, wiring, and connectors for any visible damage or corrosion. Replace any faulty components as needed.
  3. Test the sensor circuit for continuity and proper voltage levels to ensure accurate temperature readings.
  4. Reset the fault codes and perform a test drive to verify that the issue has been resolved.
  5. If the problem persists, consult a professional technician for further diagnosis and repair.

Cost to Fix P0AC7 2016 GMC Sierra

The typical repair costs for addressing a Hybrid/EV Battery Temperature Sensor 2 Circuit Low Voltage issue can vary depending on the specific cause of the problem. In general, parts for this repair may range from $50 to $200, while labor costs can vary between $100 and $300. Keep in mind that diagnosis time and labor rates at auto repair shops can fluctuate based on factors such as location, vehicle make and model, and engine type. It's recommended to inquire about local rates for a more accurate estimate.

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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 P0AC7 2016 GMC Sierra Code

1. What does the OBDII code P0AC7 mean on a 2016 GMC Sierra?

P0AC7 indicates a low voltage issue in the Hybrid/EV Battery Temperature Sensor 2 circuit. This sensor monitors the temperature of the hybrid/EV battery to ensure safe operation.

2. What are the symptoms of code P0AC7 on a 2016 GMC Sierra?

Symptoms may include a check engine light, reduced fuel efficiency, limited hybrid system performance, or the vehicle going into limp mode.

3. What causes the P0AC7 code to appear?

Common causes include a faulty battery temperature sensor, damaged wiring or connectors in the sensor circuit, a malfunctioning hybrid battery control module, or a low hybrid battery charge.

4. How do you troubleshoot the P0AC7 code?

Start by checking the sensor wiring and connectors for damage or corrosion, testing the temperature sensor for proper operation, and verifying the voltage and resistance readings with a multimeter.

5. Can I drive my 2016 GMC Sierra with a P0AC7 code?

It’s not recommended, as driving with this code may lead to hybrid system overheating or reduced performance. Address the issue promptly to avoid further damage.

6. How is the P0AC7 code fixed?

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

7. How much does it cost to fix the P0AC7 code?

Repair costs vary depending on the cause but may range from $100 to $500 for sensor replacement or wiring repair. Control module replacement can cost more.

8. Can I reset the P0AC7 code without fixing the issue?

You can clear the code with an OBDII scanner, but it will likely return if the underlying issue isn’t resolved.

9. What tools are needed to diagnose a P0AC7 code?

You’ll need an OBDII scanner, a multimeter to test wiring and sensors, and possibly a service manual for your 2016 GMC Sierra to locate components and specifications.

10. Is the P0AC7 code common in the 2016 GMC Sierra?

This code is less common but can occur in hybrid or EV models of the Sierra. Regular maintenance and prompt repairs can help prevent it.

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