P0AC7 2018 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 2018 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 2018 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 2018 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 2018 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 2018 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 2018 GMC Sierra Code
What does the OBDII code P0AC7 mean on a 2018 GMC Sierra?
P0AC7 indicates a low voltage issue in the Hybrid/EV Battery Temperature Sensor 2 circuit, which monitors the battery's temperature to ensure proper operation and safety.
What are the common symptoms of a P0AC7 code on a 2018 GMC Sierra?
Symptoms may include a check engine light, reduced hybrid system performance, decreased fuel efficiency, or the vehicle entering a fail-safe or limp mode.
What causes the P0AC7 code on a 2018 GMC Sierra?
Common causes include a malfunctioning battery temperature sensor, damaged wiring or connectors in the sensor circuit, or a fault in the hybrid battery control module.
Can I drive my 2018 GMC Sierra with a P0AC7 code?
Driving with this code is not recommended, as it may lead to further damage to the hybrid battery system or compromise vehicle performance and safety.
How is the P0AC7 code diagnosed on a 2018 GMC Sierra?
Technicians use a scan tool to read the code, inspect the battery temperature sensor and wiring, and test the circuit for proper voltage and continuity.
What repairs can fix the P0AC7 code on a 2018 GMC Sierra?
Repairs may include replacing the battery temperature sensor, repairing damaged wiring or connectors, or reprogramming or replacing the hybrid battery control module if needed.
How much does it cost to fix the P0AC7 code on a 2018 GMC Sierra?
Repair costs vary, but replacing a battery temperature sensor typically ranges from $150 to $300, while more extensive wiring repairs or control module replacement can cost significantly more.
Can a weak hybrid battery cause the P0AC7 code?
While a weak hybrid battery is not a direct cause, it can contribute to temperature sensor issues if the battery's thermal management system is compromised.
How can I prevent a P0AC7 code on my 2018 GMC Sierra?
Regular maintenance of the hybrid battery system, including checking wiring and connectors for damage, can help prevent this code from occurring.
Does the P0AC7 code require reprogramming the hybrid system?
In some cases, reprogramming the hybrid battery control module may be necessary after repairs to ensure proper functionality and communication.
Discuss the causes and fixes for P0AC7 2018 GMC Sierra OBDII Code
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