B3112 2018 GMC Sierra Code - Keyless Entry Transmitter 4 Battery
Quick Answer
The B3112 code for a 2018 GMC Sierra relates to an issue with the Keyless Entry Transmitter 4 Battery. Common causes include Dead or low battery in the key fob transmitter, Faulty key fob transmitter, Electrical issues related to the keyless entry system. 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
- B3112 2018 GMC Sierra indicates Keyless Entry Transmitter 4 Battery.
- Common causes
- Common causes include Dead or low battery in the key fob transmitter, Faulty key fob transmitter, Electrical issues related to the keyless entry system.
- 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.
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Code B3112 2018 GMC Sierra Description
The B3112 code for a 2018 GMC Sierra relates to an issue with the Keyless Entry Transmitter 4 Battery. This code indicates that there is a problem with the battery in the key fob transmitter, which is responsible for allowing the vehicle to recognize and respond to the keyless entry signals. If the battery in the transmitter is low or dead, it can result in issues with unlocking or locking the vehicle, as well as starting the engine remotely.
Common Causes of B3112 2018 GMC Sierra
- Dead or low battery in the key fob transmitter.
- Faulty key fob transmitter.
- Electrical issues related to the keyless entry system.
- Interference from other electronic devices affecting the key fob signal.
Symptoms of B3112 2018 GMC Sierra
- Key fob not working properly or intermittently.
- Inability to unlock or lock the vehicle using the keyless entry feature.
- Remote start function not functioning.
- Warning message on the instrument cluster related to key fob battery.
How to Fix B3112 2018 GMC Sierra
- Replace the battery in the key fob transmitter with a new one.
- Check the key fob transmitter for any visible damage and replace if necessary.
- Perform a reset of the keyless entry system to re-sync the transmitter with the vehicle.
- Inspect the vehicle's electrical system for any issues that may be affecting the keyless entry system.
- Test the key fob transmitter to ensure proper functioning after the repair.
Cost to Fix B3112 2018 GMC Sierra
The cost of replacing the battery in the key fob transmitter is relatively low, typically ranging from $5 to $20 for the battery itself. If the key fob transmitter needs to be replaced, the cost can vary from $50 to $200 depending on the make and model of the vehicle. Labor costs for this repair can range from $50 to $150, depending on the shop's hourly rates. It's essential to factor in diagnostic time and any additional parts or repairs that may be necessary.
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Frequently Asked Questions about B3112 2018 GMC Sierra Code
1. What does the OBDII code B3112 mean on a 2018 GMC Sierra?
The code B3112 indicates an issue with the battery in the Keyless Entry Transmitter 4, usually related to low voltage or a malfunction.
2. What are the symptoms of code B3112 in a 2018 GMC Sierra?
Common symptoms include the fourth key fob not working, intermittent signal issues, or the inability to lock/unlock the vehicle using that transmitter.
3. What causes the B3112 code to appear?
The most common cause is a low or dead battery in Keyless Entry Transmitter 4. Other possible causes include a damaged key fob or communication issues between the fob and the vehicle.
4. How can I fix the B3112 code on my GMC Sierra?
Replacing the battery in Keyless Entry Transmitter 4 usually resolves the issue. If the problem persists, check the fob for physical damage or consult a technician.
5. How do I replace the battery in Keyless Entry Transmitter 4?
Open the key fob case, remove the old battery, and replace it with a new CR2032 or CR2025 battery, depending on your fob model. Ensure the battery is installed with the correct polarity.
6. Can I clear the B3112 code without repairing the key fob?
Clearing the code without addressing the issue will result in the code returning. Ensure the fob is functioning properly before clearing the code with a scan tool.
7. How do I know if the problem is with the key fob or the vehicle?
Test the fourth key fob after replacing the battery. If it still doesn’t work, try reprogramming the fob or using another fob to determine if the issue lies within the vehicle's receiver.
8. What type of battery does the 2018 GMC Sierra key fob use?
The key fob typically uses a CR2032 or CR2025 coin cell battery, depending on the model.
9. Do all key fobs need to be reprogrammed after replacing the battery?
No, most key fobs retain their programming after a battery replacement. However, if the fob doesn’t work, reprogramming may be required.
10. Can a dealership fix the B3112 code on my GMC Sierra?
Yes, a dealership can diagnose and repair the issue, including replacing the battery, reprogramming the key fob, or addressing receiver malfunctions.
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