DTC C1AF4: Rr Sensor Initialization Incomplete [06/2018 - 09/2022]: Procedure

1. Initialize the rear center ultrasonic sensor and rear corner ultrasonic sensor.

   Refer to CALIBRATION [06/2018 - 08/2021] , or refer to CALIBRATION [08/2021 - 09/2022]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  2

1. Using the Techstream, check for DTCs according to the prompts on the screen.

   HINT: 

   After turning the engine switch from off to on (IG), wait 10 seconds or more before checking for DTCs.

   Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes 

   Result

   Result	Proceed to
   DTC C1AF4 is output	A
   DTC C1AF4 is not output	B

   HINT: 

   if DTC C1AF4 is still output after initializing the rear center ultrasonic sensor and rear corner ultrasonic sensor 3 times, replace the clearance warning ECU assembly.

Result: 

A 

REPLACE CLEARANCE WARNING ECU ASSEMBLY. Refer to  REMOVAL [06/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022] 

Result: 

B 

END (REAR SENSORS WERE NOT INITIALIZED)