P0AC8 2014 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 2014 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 2014 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 2014 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 2014 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 2014 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 2014 GMC Sierra Code
1. What does the OBDII code P0AC8 mean on a 2014 GMC Sierra?
The P0AC8 code indicates a high voltage issue in the Hybrid/EV Battery Temperature Sensor 2 circuit, which monitors the battery's temperature to ensure safe operation.
2. What are the common symptoms of code P0AC8 in a 2014 GMC Sierra?
Symptoms include an illuminated check engine light, reduced fuel economy, limited hybrid system performance, and possible activation of fail-safe mode.
3. What causes the P0AC8 code to appear on a 2014 GMC Sierra?
Common causes are a faulty battery temperature sensor, damaged or corroded wiring, poor electrical connections, or an issue with the hybrid battery control module.
4. Can I drive my 2014 GMC Sierra with the P0AC8 code?
While it may be possible to drive, it's not recommended. This code can limit hybrid system performance and may lead to further damage if not addressed promptly.
5. How do I diagnose the P0AC8 code on a 2014 GMC Sierra?
Diagnosis involves checking the battery temperature sensor for faults, inspecting the wiring and connectors for damage or corrosion, and testing the hybrid battery control module.
6. How do I fix the P0AC8 code on my 2014 GMC Sierra?
Repairs may include replacing the faulty temperature sensor, repairing or replacing damaged wiring, cleaning corroded connectors, or reprogramming/updating the control module.
7. Is the P0AC8 code related to a problem with the hybrid battery itself?
Not necessarily. The issue is specific to the battery temperature sensor circuit, but it’s essential to rule out battery-related problems during diagnosis.
8. How much does it cost to fix the P0AC8 code on a 2014 GMC Sierra?
Repair costs vary depending on the specific issue but can range from $100 for wiring repairs to over $500 if the temperature sensor or control module needs replacement.
9. Can a P0AC8 code cause long-term damage to my 2014 GMC Sierra?
If left unresolved, this code could lead to overheating or underperformance of the hybrid battery system, potentially causing more severe damage over time.
10. Do I need special tools to troubleshoot the P0AC8 code?
Yes, diagnosing this code typically requires an OBD-II scanner capable of reading hybrid system data and a multimeter to test voltage and continuity in the circuit.
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