P0AC8 2016 GMC Sierra Code - Hybrid/EV Battery Temperature Sensor 2 Circuit High 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
- P0AC8 2016 GMC Sierra indicates Hybrid/EV Battery Temperature Sensor 2 Circuit High 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 P0AC8 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 less than -69°C (-92°F).
What are the Possible Causes of the DTC P0AC8 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 P0AC8 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 P0AC8 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 P0AC8 2016 GMC Sierra Code
1. What does the OBDII code P0AC8 mean on a 2016 GMC Sierra?
P0AC8 indicates a problem with the Hybrid/EV Battery Temperature Sensor 2 Circuit, specifically reporting a high voltage condition.
2. What are the symptoms of P0AC8 on a 2016 GMC Sierra?
Symptoms may include an illuminated check engine light, reduced hybrid system performance, limited power mode, or issues with battery cooling.
3. What causes the P0AC8 code to appear?
Common causes include a faulty battery temperature sensor, damaged wiring or connectors in the sensor circuit, or a malfunctioning hybrid battery control module.
4. Can I continue driving my 2016 GMC Sierra with a P0AC8 code?
It’s not recommended to drive extensively with this code, as it may lead to overheating or damage to the hybrid/EV battery system.
5. How do I diagnose a P0AC8 code?
Diagnosis involves checking the battery temperature sensor, inspecting wiring and connectors for damage, and performing voltage tests on the circuit.
6. How do I fix the P0AC8 code on my 2016 GMC Sierra?
Repairs may include replacing the faulty temperature sensor, repairing or replacing damaged wiring, or reprogramming or replacing the hybrid battery control module.
7. Is the P0AC8 code specific to the 2016 GMC Sierra?
No, P0AC8 can appear in other hybrid or EV vehicles that use a similar battery temperature monitoring system, but the specifics may vary by model.
8. What tools are needed to troubleshoot the P0AC8 code?
You’ll need a scan tool capable of reading hybrid system codes, a multimeter for voltage testing, and possibly a wiring diagram for the vehicle.
9. How much does it cost to fix a P0AC8 code on a 2016 GMC Sierra?
Repair costs can vary, but replacing a temperature sensor typically ranges from $150 to $300, depending on labor rates and parts pricing.
10. Can a software update fix the P0AC8 code?
In some cases, a software update to the hybrid battery control module may resolve the issue if the problem is related to a programming error.
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