P0ACB 2018 GMC Sierra Code - Hybrid/EV Battery Temperature Sensor 3 Performance
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
- P0ACB 2018 GMC Sierra indicates Hybrid/EV Battery Temperature Sensor 3 Performance.
- 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 P0ACB 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 difference between a single battery temperature sensor and an average of the other battery temperature sensors is greater than 25°C (45°F).
What are the Possible Causes of the DTC P0ACB 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 P0ACB 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 P0ACB 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.
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Frequently Asked Questions about P0ACB 2018 GMC Sierra Code
What does the OBDII code P0ACB mean for a 2018 GMC Sierra?
1. P0ACB indicates an issue with the performance of Hybrid/EV Battery Temperature Sensor 3, which monitors the temperature of the hybrid/EV battery pack. 2.
What are the common symptoms of code P0ACB in a 2018 GMC Sierra?
Common symptoms include reduced hybrid system performance, activation of the check engine light, and potential failure to charge or discharge the battery properly. 3.
What causes the P0ACB code to appear on a 2018 GMC Sierra?
Causes may include a faulty battery temperature sensor, damaged wiring or connectors, or issues with the hybrid battery control module. 4.
Can you drive a 2018 GMC Sierra with the P0ACB code?
While it may be possible to drive, it’s not recommended as it can lead to reduced hybrid efficiency or damage to the battery pack. 5.
How is the P0ACB code diagnosed on a 2018 GMC Sierra?
A technician will use a scan tool to check for related codes, inspect the battery temperature sensor and its wiring, and test the sensor’s performance against specifications. 6.
How do you fix the P0ACB code on a 2018 GMC Sierra?
Repairs may involve replacing the faulty temperature sensor, repairing damaged wiring or connectors, or reprogramming or replacing the hybrid battery control module if necessary. 7.
What tools are needed to address the P0ACB code on a 2018 GMC Sierra?
Tools may include an OBDII scanner, multimeter, and potentially a battery system diagnostic tool to test the sensor and related components. 8.
Does the P0ACB code affect fuel efficiency on a 2018 GMC Sierra?
Yes, this code can reduce hybrid system performance, leading to decreased fuel efficiency. 9.
Is the P0ACB code covered under warranty for a 2018 GMC Sierra?
It may be covered under the hybrid system or emissions warranty, but this depends on the vehicle’s mileage and warranty terms. 10.
Can a faulty battery temperature sensor damage the hybrid battery in a 2018 GMC Sierra?
Yes, inaccurate temperature readings can cause improper battery management, potentially leading to overheating or reduced lifespan of the hybrid battery.
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