DTC C2126: Transmitter ID not Received (Main) [12/2019 - 11/2023]: Description

If ID registration via the automatic ID registration function is canceled or the tire pressure warning ECU and receiver does not receive data from the tire pressure warning valve and transmitters after the tire pressure warning valve and transmitter ID registration is completed using the GTS, the tire pressure warning ECU and receiver stores DTC C2126.

After ID registration is complete using the GTS, the tire pressure warning light illuminates after blinking for 1 minute. When the tire pressure warning ECU and receiver receives the data from all tire pressure warning valve and transmitters with registered IDs, the tire pressure is judged to be normal and the tire pressure warning light turns off.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Note
C2126	Transmitter ID not Received (Main)	After transmitter ID registration is completed, ECU does not receive data in 1 trip from transmitters whose IDs are stored in ECU. ID registration is canceled via the automatic ID registration function	Transmitter ID registration failure Tire pressure warning valve and transmitter Tire pressure warning ECU and receiver	-

NOTE:

If DTC C2126 is stored, C2128 may also be stored. If DTC C2128 is stored, perform troubleshooting for DTC C2128 before performing troubleshooting for DTC C2126.

HINT:

The purpose of this DTC is to help prevent delivering a vehicle that has incorrectly registered transmitter IDs. After all IDs are registered, DTC C2126 is detected and the tire pressure warning light blinks for 1 minute and then illuminates. If the tire pressure warning light does not go off after a little while, the transmitter IDs may be incorrectly registered.