P0AC9 2014 Chevrolet Silverado Code - Hybrid/EV Battery Temperature Sensor 2 Circuit Erratic
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
- P0AC9 2014 Chevrolet Silverado indicates Hybrid/EV Battery Temperature Sensor 2 Circuit Erratic.
- 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 P0AC9 2014 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 intermittent or has changed by 10°C (18°F) or greater for 4 out of 5 seconds.
What are the Possible Causes of the DTC P0AC9 2014 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 P0AC9 2014 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 P0AC9 2014 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 P0AC9 2014 Chevrolet Silverado Code
What does the OBDII code P0AC9 mean for a 2014 Chevrolet Silverado?
The P0AC9 code indicates an issue with the Hybrid/EV Battery Temperature Sensor 2 Circuit, specifically that its readings are erratic or inconsistent.
What are the symptoms of code P0AC9 in a 2014 Chevrolet Silverado?
Common symptoms include the check engine light turning on, reduced hybrid system performance, or the vehicle entering a fail-safe or limp mode.
What causes the P0AC9 code to appear?
Possible causes include a faulty battery temperature sensor, damaged wiring or connectors in the sensor circuit, or an issue with the hybrid battery control module.
Can I drive my 2014 Chevrolet Silverado with the P0AC9 code?
While the vehicle may still be drivable, continuing to drive with this code active could lead to reduced performance or further damage to the hybrid system.
How is the P0AC9 code diagnosed?
A technician will use a scan tool to verify the code, inspect the battery temperature sensor and its wiring, and test the sensor's functionality to identify the root cause.
How is the P0AC9 code repaired?
Repairs may involve replacing the faulty battery temperature sensor, repairing or replacing damaged wiring, or reprogramming or replacing the hybrid battery control module.
What tools are needed to diagnose the P0AC9 code?
A diagnostic scan tool capable of reading hybrid system codes, a multimeter for testing electrical circuits, and possibly a thermal sensor tester are needed.
How much does it cost to fix the P0AC9 code?
Repair costs can range from $150 to $500 or more, depending on whether the issue is with the sensor, wiring, or control module.
Can a weak hybrid battery cause the P0AC9 code?
A weak or failing hybrid battery is unlikely to directly cause this code, but it can exacerbate related issues, so the battery's condition should also be checked.
Is the P0AC9 code a common problem in the 2014 Chevrolet Silverado?
This code is not extremely common but can occur in vehicles with aging hybrid components or poor maintenance of the hybrid system.
Discuss the causes and fixes for P0AC9 2014 Chevrolet Silverado OBDII Code
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