Fault Family
System: Body (B-Codes)
3 SAE Codes
ADAS Camera Module Circuit
Diagnostic & Technical Explanation
Code B0124 (Night Vision Camera) sets when the module cannot establish power or communication with the night vision camera, its dedicated control module, or the driver monitoring camera used for attention/drowsiness detection. Unlike a forward-facing ADAS camera bolted to the windshield, these units are often mounted in the instrument cluster hood or A-pillar and share a dedicated power and data circuit with their control module, so a fault here typically traces to a connector at that mounting location, a blown fuse on a shared feed, or a failed camera imaging element. Losing this camera disables its specific driver-assist or monitoring feature but does not affect core ADAS functions fed by the primary forward camera.
These 3 diagnostic trouble codes share one
detection mechanism and one repair path, which is why MechanicDB groups them into a single
authored fault family rather than repeating the same explanation 3 times.
What this page does not show
This page publishes the fault mechanism and the code index. The licensed dataset adds, for
every one of the 15,886 codes, the full authored repair set (56,729 procedures in total)
with the fields deliberately withheld here:
- Procedures 2..n after the first-listed procedure
- Aftermarket parts cost ranges in USD (
est_parts_cost_min/max_usd)
- Professional labor-hour estimates (
est_labor_hours)
- Step-by-step diagnostic and repair instructions
- Replacement-part mappings and catalog lookups
- 6,637 manufacturer-specific OEM codes across 32 makes ($149 tier)