AutoCodes.com | All About OBDII Engine Codes
AutoCodes - Cadillac - B127E Cadillac

B127E Cadillac Code - Front Video Display Output Signal Malfunction

- Code Popularity: 1,552 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
Share on Facebook   Share on Twitter   Share on Linkedin

What are the Possible Causes of the DTC B127E Cadillac?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Front Video Display
  • Front Video Display harness is open or shorted
  • Front Video Display circuit poor electrical connection
  • Faulty Low Voltage Differential Signaling (LVDS) Cable
⚠ Does your Cadillac have Safety Recalls? → Check here

How to Fix the DTC B127E Cadillac?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

Code Tech Notes

When a DVD is playing on the front radio display B127E will set as a false current code. Please ignore TC B127E unless the code stays current after ejecting the DVD.

Search for B127E Cadillac Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B127E Cadillac code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code B127E Cadillac Description

The infotainment display and controls are separate components from the radio, combined into an assembly. The assembly is supplied with battery voltage and ground from the vehicle harness. The Human Machine Interface Control Module communicates digital video data for an on-screen display through a dedicated cable containing the Low Voltage Differential Signaling (LVDS) data circuits.
Control information, touch communications, and dimming level for the display are communicated via a LIN serial data circuit to the Human Machine Interface Control Module.
If the Human Machine Interface Control Module detects the display is not responding to the output on the LVDS circuits, the Human Machine Interface Control Module sets the Diagnostic Trouble Code (DTC).

OBDII Code B127E Cadillac - Front Video Display Output Signal Malfunction - AutoCodes.com
B127E Cadillac Code - Front Video Display Output Signal Malfunction

Need More Information on the Code?

Need more information on how to fix the B127E Cadillac code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B127E Cadillac code diagnosed by a professional: Find a repair shop in your area

Code B127E Cadillac comments

Help us improve AutoCodes.com. Leave a comment below or tell us if the information above helps you fix the code. What are the symptoms on your vehicle for the B127E Cadillac code? Have you replaced any parts?
Any information is appreciated. Thanks