P0AC7 2016 GMC Sierra Code - Hybrid/EV Battery Temperature Sensor 2 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
- P0AC7 2016 GMC Sierra indicates Hybrid/EV Battery Temperature Sensor 2 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 P0AC7 2016 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 P0AC7 2016 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 P0AC7 2016 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 P0AC7 2016 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.
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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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