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Home >> Toyota >> 2012 >> Prius Plug-in >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Cruise Control Systems >> Dynamic Radar Cruise Control System (Plug-In) (Diagnostic Codes & Circuit Tests) >> Dynamic Radar Cruise Control System >> DTC C1A0A: Front Radar Sensor Region Code Mismatch >> Description
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DTC C1A0A: Front Radar Sensor Region Code Mismatch: Description

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

When the millimeter wave radar sensor assembly is replaced with a new one, it acquires the country specification information from the driving support ECU assembly. Also, when the driving support ECU assembly is replaced with a new one, it receives the country specification information from the main body ECU. When the country specification information in the sensor and ECU do not match, DTC C1A0A is stored.

DTC No. DTC Detection Condition Trouble Area
C1A0A While power switch is on (IG) and dynamic radar cruise control system is operating, country specification information in driving support ECU assembly and front millimeter wave radar sensor do not match for 1 second
  • Millimeter wave radar sensor assembly
  • Driving support ECU assembly