P0AC7 2015 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 2015 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 2015 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 2015 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 2015 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 2015 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 2015 GMC Sierra Code
1. What does the OBDII code P0AC7 mean on a 2015 GMC Sierra?
The P0AC7 code indicates a problem with the Hybrid/EV Battery Temperature Sensor 2 Circuit, specifically detecting low voltage.
2. What are the common symptoms of the P0AC7 code in a 2015 GMC Sierra?
Symptoms may include the check engine light turning on, reduced fuel efficiency, limited hybrid system performance, or the vehicle entering "limp mode."
3. What causes the P0AC7 code to appear?
Common causes include a faulty battery temperature sensor, damaged wiring or connectors in the circuit, or issues with the hybrid battery control module.
4. Can I drive my 2015 GMC Sierra with the P0AC7 code?
It’s not recommended to drive the vehicle for extended periods, as it may lead to further damage to the hybrid system or reduced performance.
5. How do I diagnose the P0AC7 code on my GMC Sierra?
Start by checking the battery temperature sensor and its wiring for damage or corrosion, and use a scan tool to monitor the sensor's voltage readings.
6. How do I fix the P0AC7 code on a 2015 GMC Sierra?
Repairs may include replacing the battery temperature sensor, repairing or replacing damaged wiring or connectors, or reprogramming the hybrid system control module.
7. How much does it cost to repair the P0AC7 code on a GMC Sierra?
The repair cost varies, but replacing a temperature sensor typically costs $100–$300, while wiring repairs or module replacement may cost more.
8. Can a dead hybrid battery cause the P0AC7 code?
No, the P0AC7 code specifically relates to the temperature sensor circuit, not the overall battery health.
9. Does the P0AC7 code affect the performance of the hybrid system?
Yes, this code can limit the hybrid system’s functionality and cause the vehicle to rely more on the gas engine.
10. Can I clear the P0AC7 code without fixing the issue?
Clearing the code without addressing the underlying problem is not recommended, as the issue will likely recur and may cause further damage.
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