P0ACC 2018 GMC Sierra Code - Hybrid/EV Battery Temperature Sensor 3 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
- P0ACC 2018 GMC Sierra indicates Hybrid/EV Battery Temperature Sensor 3 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 P0ACC 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 P0ACC 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 P0ACC 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 P0ACC 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.
Need more information about the P0ACC 2018 GMC Sierra code?
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Frequently Asked Questions about P0ACC 2018 GMC Sierra Code
1. What does the OBDII code P0ACC mean on a 2018 GMC Sierra?
The P0ACC code indicates a "Hybrid/EV Battery Temperature Sensor 3 Circuit Low Voltage," meaning the vehicle's system has detected an issue with the voltage signal from the third battery temperature sensor.
2. What are the common symptoms of a P0ACC code in a 2018 GMC Sierra?
Symptoms may include an illuminated check engine light, reduced fuel efficiency, limited hybrid or EV mode functionality, or the vehicle entering a limp mode to prevent damage.
3. What causes the P0ACC code to appear?
Common causes include a faulty battery temperature sensor, damaged wiring or connectors in the sensor circuit, a blown fuse, or a malfunction in the hybrid battery control module.
4. Can I drive my 2018 GMC Sierra with a P0ACC code?
Driving with this code is not recommended, as it could lead to further damage to the hybrid/EV battery system or reduced vehicle performance.
5. How do I diagnose the P0ACC code on my 2018 GMC Sierra?
Diagnosis typically involves scanning the vehicle with an OBDII tool, inspecting the battery temperature sensor and its wiring, checking for loose or corroded connections, and testing the sensor's functionality with a multimeter.
6. How do I fix the P0ACC code on a 2018 GMC Sierra?
Repairs may include replacing the faulty battery temperature sensor, repairing or replacing damaged wiring or connectors, or updating/reprogramming the hybrid battery control module if necessary.
7. How much does it cost to repair a P0ACC code on a 2018 GMC Sierra?
Repair costs vary depending on the issue, but replacing a battery temperature sensor typically costs $150–$300, while wiring repairs or module replacement could add to the expense.
8. Can a bad battery cause the P0ACC code on a 2018 GMC Sierra?
A degraded or failing hybrid/EV battery may contribute to this code, but the primary issue is usually with the temperature sensor or its circuit.
9. Will clearing the P0ACC code fix the issue permanently?
Clearing the code may temporarily turn off the check engine light, but the underlying issue must be repaired to prevent the code from returning.
10. Is the P0ACC code specific to the 2018 GMC Sierra?
While P0ACC is a standardized OBDII code for hybrid/EV vehicles, its specific implementation and repair steps may vary by make and model. Always refer to vehicle-specific repair manuals.
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