P0AC8 2017 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 2017 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 2017 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 2017 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 2017 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 2017 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 2017 GMC Sierra Code
1. What does the OBDII code P0AC8 mean on a 2017 GMC Sierra?
P0AC8 indicates an issue with the Hybrid/EV Battery Temperature Sensor 2 Circuit, specifically detecting high voltage in the circuit.
2. What are the common symptoms of the P0AC8 code in a 2017 GMC Sierra?
Symptoms may include an illuminated check engine light, reduced hybrid functionality, poor fuel efficiency, or limited power in hybrid mode.
3. What causes the P0AC8 code to appear in a 2017 GMC Sierra?
The code can be caused by a faulty battery temperature sensor, damaged wiring, corroded connectors, or a malfunctioning battery control module.
4. Can I drive my 2017 GMC Sierra with the P0AC8 code?
It’s not recommended, as the hybrid system may not operate efficiently or safely. Driving could also cause further damage to the hybrid battery system.
5. How do I diagnose the P0AC8 code on a 2017 GMC Sierra?
Diagnosis typically involves checking the battery temperature sensor, inspecting the wiring and connectors for damage, and using a scan tool to monitor sensor readings.
6. How can I fix the P0AC8 code on my 2017 GMC Sierra?
Repairs may include replacing the faulty battery temperature sensor, repairing or replacing damaged wiring, cleaning corroded connectors, or reprogramming the battery control module.
7. How much does it cost to fix the P0AC8 code on a 2017 GMC Sierra?
Repair costs vary but can range from $100-$500, depending on whether the issue is a simple wiring repair or requires component replacement.
8. Can a dead hybrid battery trigger the P0AC8 code?
A failing or damaged hybrid battery could indirectly contribute to the P0AC8 code if it impacts the temperature sensor circuit.
9. Is a software update needed to clear the P0AC8 code on a 2017 GMC Sierra?
In some cases, a reprogramming of the battery control module may be necessary if the issue is related to software glitches.
10. Will clearing the P0AC8 code with a scan tool resolve the issue?
Clearing the code without addressing the root cause will likely result in the code returning. Proper diagnosis and repair are essential.
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