LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2021 >> Prius LE AWD-e >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Dynamic Radar Cruise Control System - Diagnostic Codes & Circuit Tests >> Dynamic Radar Cruise Control System >> DTC C1A0A: Front Radar Sensor Region Code Mismatch [11/2015 - 07/2020] >> Description
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC C1A0A: Front Radar Sensor Region Code Mismatch [11/2015 - 07/2020]: Description

The driving support ECU assembly uses the millimeter wave radar sensor assembly to detect objects in front of the vehicle.

When the destination information in the millimeter wave radar sensor assembly and driving support ECU assembly do not match, DTC C1A0A is stored.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL
C1A0A Front Radar Sensor Region Code Mismatch When the power switch is on (IG) and the dynamic radar cruise control system is operating, the destination information in the driving support ECU assembly and millimeter wave radar sensor assembly do not match for approximately 1.3 seconds or more.
  • Millimeter wave radar sensor assembly
  • Driving support ECU assembly
Does not come on