The B2784 code on your 2022 Genesis GV70 indicates a malfunction with the Forward Collision-Avoidance Assist (FCA) sensor system. This code affects your GV70's ability to detect obstacles ahead and provide collision warnings or automatic emergency braking.
Understanding B2784 on Genesis GV70
The FCA system uses radar and/or camera sensors to monitor the road ahead for vehicles, pedestrians, and obstacles. Code B2784 indicates a fault has been detected in this critical safety system, which may disable automatic emergency braking functions.
Common Symptoms
- FCA warning light illuminated
- Forward collision alert disabled message
- Automatic emergency braking not available
- Adaptive cruise control affected
- Sensor blocked warning
- False forward collision warnings
Primary Causes
- Front radar sensor failure
- Sensor blocked by dirt/ice/debris
- Front grille or fascia damage
- Sensor misalignment after collision
- Camera system fault (if multi-sensor)
- Control module communication issue
- Wiring damage to sensors
Diagnostic Procedure for 2022 GV70
Using Genesis GDS or compatible scan tool, access FCA system data. Identify specific sensor faults - radar, camera, or both. Inspect front grille area for damage or obstructions blocking sensors. Check for dirt, ice, or debris on sensor surfaces. Verify sensor alignment if front-end work was performed. Check wiring and connectors to sensors.
Repair Solutions
Clean blocked sensors - dirt and ice are common causes. Repair or replace damaged front fascia affecting sensor view. Replace faulty radar or camera sensors. After collision repair, ensure sensors are properly aligned and calibrated. Wiring repairs may be needed after front-end damage. Clear codes and road test to verify proper FCA operation.