P0AC8 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado?
- 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 2018 Chevrolet Silverado?
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 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado Code
1. What does the OBDII code P0AC8 mean for a 2018 Chevrolet Silverado?
The P0AC8 code indicates a high voltage issue in the Hybrid/EV Battery Temperature Sensor 2 Circuit, which monitors the temperature of the battery pack to ensure safe operation.
2. What are common symptoms of the P0AC8 code in a 2018 Chevrolet Silverado?
Symptoms may include the check engine light turning on, decreased hybrid system performance, reduced fuel efficiency, and potential overheating of the battery pack.
3. What causes the P0AC8 code to appear in a 2018 Chevrolet Silverado?
Common causes include a faulty battery temperature sensor, damaged wiring or connectors in the sensor circuit, or an issue with the hybrid battery control module.
4. Can I drive my 2018 Chevrolet Silverado with the P0AC8 code?
It is not recommended to drive for extended periods with this code active, as it could lead to hybrid system damage or battery overheating.
5. How do you diagnose the P0AC8 code in a 2018 Chevrolet Silverado?
Diagnosis involves using a scan tool to check freeze frame data, inspecting wiring and connectors for damage, and testing the battery temperature sensor for proper operation.
6. How do you fix the P0AC8 code on a 2018 Chevrolet Silverado?
Repairs may include replacing the faulty temperature sensor, repairing damaged wiring, or reprogramming or replacing the hybrid battery control module if needed.
7. Is the P0AC8 code covered under warranty for a 2018 Chevrolet Silverado?
Depending on the vehicle’s warranty terms, issues related to the hybrid system may be covered under the powertrain or hybrid-specific warranty.
8. How much does it cost to fix the P0AC8 code on a 2018 Chevrolet Silverado?
Repair costs can vary, with sensor replacement typically costing $150–$400, and more extensive repairs like module replacement costing upwards of $1,000.
9. Can a weak hybrid battery cause the P0AC8 code on a 2018 Chevrolet Silverado?
While rare, a degraded hybrid battery can potentially affect the temperature sensor circuit and trigger this code.
10. How can I prevent the P0AC8 code from recurring on my 2018 Chevrolet Silverado?
Regular maintenance, inspecting hybrid system components, and addressing any wiring or sensor issues promptly can help prevent this code from recurring.
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