Body, generic

B0126 Driver Monitoring Camera

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

B0126 belongs to the driver monitoring camera, an infrared camera aimed at the driver that tracks gaze and head position for hands-free and attention functions. GM uses the code: preliminary information PIC6556 (versions B to H, 2024–2025) for Super Cruise models from Cadillac Lyriq to Silverado EV lists B0126 symptom 82, stored by the module that processes camera images and often paired with B1DD0; the steps are a 30-minute disconnect, a check of the LVDS cable and finally a new camera. PIT6229 reports Super Cruise dropping out because software wrongly judged the driver's gaze to be off the road. In the EU, Delegated Regulation 2023/2590 requires distraction warnings above 20 km/h and a failure warning when the sensor is faulty or blocked. Hands-free driving is unavailable while the fault is active.

Likely causes

Driver monitoring camera internally defective
LVDS cable to the image processing module damaged or poorly connected
Software fault, or camera view blocked by objects or mounting problems

Symptoms

  • Hands-free assistance such as Super Cruise unavailable or disengaging
  • Driver attention or distraction warning inactive, failure message shown

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€100–1,500
Time0.5–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

driver monitoring cameradriver monitoring modulecamera wiring

Related codes

B0124B0125

References: static.nhtsa.gov, static.nhtsa.gov, eur-lex.europa.eu, smarteye.se.