Engine-Codes - Generic - B127B

B127B Code - Rearview Camera Input Signal

- Code Popularity: 2,636 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents

|What are the Possible Causes of the B127B Code?

  • Faulty Rearview Camera
  • Rearview Camera harness is open or shorted
  • Rearview Camera circuit poor electrical connection
  • Faulty Human Machine Interface Control Module

|How to Fix the B127B Code?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

|What is the cost to diagnose the B127B code?

Labor: 1.0

The cost to diagnose the B127B code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|What are B127B code possible symptoms?

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

|What Does the B127B Code Mean?

When the vehicle is placed in reverse with the engine running, a voltage signal is sent to the rearview camera to turn on and send a video signal to the Human Machine Interface Control Module. If the Human Machine Interface Control Module does not see a signal from the camera it will set B127B 2B and display Service Rear Vision System.

Rearview Camera Input Signal

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