Diagnostic Aids

If DTC B390A 58 is set, check for anything that can interfere with the radar signal. Verify area in front of radar is clean of mud, ice, snow, etc. Also verify the fascia panels in front of the radar are damage-free and not obstructed by any add-on accessories such as emblems, etc.

The B233 Radar Sensor Module - Short Range modules cannot be swapped from side to side once they have been installed. Failure type byte 67 can occur if a module is reinstalled on the incorrect side of the vehicle.