B127A 2018 Chevrolet Silverado Code - Auxiliary Video Input Signal Circuit
Quick Answer
The rear seat entertainment system has an auxiliary input assembly that contains a USB port, an SD card reader, RCA-type audio/video jacks, and a wired headphone jack with volume control. Common causes include Faulty Audio/Video Input Adapter, Audio/Video Input Adapter harness is open or shorted, Audio/Video Input Adapter circuit poor electrical connection. 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
- B127A 2018 Chevrolet Silverado indicates Auxiliary Video Input Signal Circuit.
- Common causes
- Common causes include Faulty Audio/Video Input Adapter, Audio/Video Input Adapter harness is open or shorted, Audio/Video Input Adapter circuit poor electrical connection.
- 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 B127A 2018 Chevrolet Silverado Description
The USB port and SD card reader slot interface with a hub device, internal to the assembly. The assembly receives fused battery voltage and ground from the harness to power the internal hub device as well as provide additional amperage to power USB devices.
The internal hub device interfaces directly with the disc player via a standard USB cable. A Mini-type USB connector is used to connect the cable to the disc player and the auxiliary input assembly. Mini-type USB male-to-female connections are used for connecting USB cables together where an in-line connection is required. An in-line cable connection is typically found between the console and the I/P harness.
The USB port allows connectivity to the rear seat entertainment system from portable media players or a USB storage device (memory stick/ flash drive). The rear seat entertainment uses the SD card reader as a mass storage device, like a USB storage device.
Once a supported device is connected to the USB port or SD card reader, the device may be sourced to one or both of the rear displays using the remote control.
What are the Possible Causes of the DTC B127A 2018 Chevrolet Silverado?
- Faulty Audio/Video Input Adapter
- Audio/Video Input Adapter harness is open or shorted
- Audio/Video Input Adapter circuit poor electrical connection
- Faulty Media Disc Player
How to Fix the DTC B127A 2018 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 B127A 2018 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 B127A 2018 Chevrolet Silverado Code
1. What does the OBDII code B127A mean on a 2018 Chevrolet Silverado?
B127A indicates an issue with the Auxiliary Video Input Signal Circuit, which involves the system responsible for processing video input signals from external devices.
2. What are the common symptoms of a B127A code?
Symptoms may include a non-functional auxiliary video input, distorted or no video display on the screen, and possible error messages on the infotainment system.
3. What causes the B127A code to appear?
This code can be triggered by a faulty auxiliary video input port, damaged wiring or connectors, a malfunctioning infotainment system, or software issues.
4. How do I diagnose a B127A code?
Start by inspecting the auxiliary video input port and its connections for damage or corrosion. Use a diagnostic scan tool to check for additional related codes and test the circuit for continuity.
5. Can a loose connector cause the B127A code?
Yes, a loose or improperly connected auxiliary video input cable or connector can disrupt the signal and trigger this code.
6. How can I fix the B127A code on my Silverado?
Depending on the cause, repairs may involve replacing the auxiliary video input port, repairing damaged wiring, updating the infotainment system software, or replacing the infotainment module if necessary.
7. Is the B127A code serious?
The B127A code typically does not affect the drivability of the vehicle, but it can cause inconvenience if you rely on the auxiliary video input feature.
8. Can software updates resolve the B127A code?
Yes, in some cases, updating the infotainment system software can resolve compatibility or system glitches causing the code.
9. How much does it cost to repair a B127A code?
Repair costs vary depending on the root cause, but replacing a faulty auxiliary video input port or repairing wiring may range from $100 to $300.
10. Can I clear the B127A code without fixing the problem?
Clearing the code with a scan tool may temporarily remove it, but if the underlying issue is not resolved, the code will likely return.
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