B125A 2016 GMC Sierra Code - Antenna Signal Circuit
Quick Answer
The digital radio receiver, located inside the radio, receives digital radio information from the digital radio antenna located on the outside of the vehicle. Common causes include Faulty Radio Unit, Faulty Coax Cable, Faulty Cellular Phone, Navigation, and Digital Radio Antenna. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
- What it means
- B125A 2016 GMC Sierra indicates Antenna Signal Circuit.
- Common causes
- Common causes include Faulty Radio Unit, Faulty Coax Cable, Faulty Cellular Phone, Navigation, and Digital Radio Antenna.
- Severity
- Low - monitor the vehicle and repair when practical.
- Can I drive?
- The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
Code B125A 2016 GMC Sierra Description
What are the Possible Causes of the DTC B125A 2016 GMC Sierra?
- Faulty Radio Unit
- Faulty Coax Cable
- Faulty Cellular Phone, Navigation, and Digital Radio Antenna
How to Fix the DTC B125A 2016 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.
Code Tech Notes
B125A:02 Antenna Signal Circuit Short to Ground
B125A:04 Antenna Signal Circuit Open
Poor AM and FM radio reception may be due to multiple influences, some of which may not be vehicle related. Areas that have high RF traffic or block the signal path may cause a degradation in radio reception. Radio reception may also be influenced by items within the vehicle, but not part of the radio system. Such examples are aftermarket electrical accessories or other items which may generate noise in the vehicle's electrical system. Aftermarket window tinting, especially when there is metallic in the film, may reduce radio reception.
AM reception is highly dependent on the antenna amplifier receiving battery voltage from the radio and being properly grounded. The antenna base has a built-in antenna amplifier that boosts both AM and FM reception. When the antenna amplifier does not receive power, AM stations may not be received, and FM reception will be limited. If the antenna base is not properly grounded, excessive interference in the signal may occur or reception may be limited.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B125A 2016 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 B125A 2016 GMC Sierra Code
1. What does the OBDII code B125A mean on a 2016 GMC Sierra?
The B125A code refers to an issue with the antenna signal circuit, which may affect the radio or communication systems.
2. What are the common symptoms of the B125A code in a 2016 GMC Sierra?
Symptoms include poor or no radio reception, static interference, or complete loss of functionality in the radio or infotainment system.
3. What causes the B125A code to appear on a 2016 GMC Sierra?
Common causes include a damaged antenna, a loose or corroded antenna connection, wiring issues, or a malfunctioning radio module.
4. How do I diagnose the B125A code on my GMC Sierra?
Start by checking the antenna for physical damage, inspecting the antenna cables for disconnections or corrosion, and testing for continuity in the antenna circuit.
5. Can a bad antenna cause the B125A code in a 2016 GMC Sierra?
Yes, a faulty or damaged antenna is a common cause of this code as it disrupts the signal circuit.
6. Is the B125A code serious on a 2016 GMC Sierra?
While it doesn’t affect vehicle drivability, it can impair entertainment and communication features, which might be inconvenient.
7. How do I fix the B125A code on my GMC Sierra?
Repairs may include replacing a damaged antenna, cleaning corroded connectors, repairing or replacing damaged wiring, or replacing the radio module if necessary.
8. Can I clear the B125A code without fixing the problem?
You can clear the code with an OBDII scanner, but it will likely return unless the underlying issue is resolved.
9. How much does it cost to repair the B125A code on a 2016 GMC Sierra?
Repair costs vary depending on the issue but typically range from $50 for simple fixes like cleaning connections to $300 or more for parts replacement.
10. Can a software update fix the B125A code in a 2016 GMC Sierra?
In rare cases, a software update for the infotainment system may resolve the issue, but physical inspection and repair are often required.
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