2012 Toyota Prius TwoFACTORY OEM SERVICE PROCEDURE

DTC C1A0C: Object Recognition Camera Region Code Mismatch: Description

for Lane keeping Assist System

When the lane recognition camera sensor assembly is replaced with a new one, it acquires the country specification information from the driving support ECU. The lane recognition camera sensor assembly has information about the market it is intended for use in (country specification information such as the destination, steering wheel position, etc.). When a new camera sensor is installed and the country specification information does not match that of the driving support ECU, the ECU stores DTC C1A0C.

DTC No. DTC Detection Condition Trouble Area
C1A0C While initial check is running, the power switch is on (IG) and the system is operating, country specification information in the driving support ECU and lane recognition camera sensor assembly do not match.
  • Lane recognition camera sensor assembly
  • Driving support ECU
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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.