C2126 Code: Meaning, Causes, and Symptoms | OBD2 Codes

C2126 – Transmitter ID not Received in Main Mode

 

C2126 Possible Symptoms

 

Anti-Lock Brake System (ABS) Warning Light ON,Engine Light ON (or Service Engine Soon Warning Light)

 

C2126 Possible Causes

 

ID Registration Failure,Faulty Tire Pressure Warning Valve and Transmitter,Faulty Tire Pressure Warning Antenna and Receiver,Tire Pressure Warning Antenna and Receiver harness is open or shorted,Tire Pressure Warning Antenna and Receiver circuit poor electrical connection,Faulty Tire Pressure Warning ECU

 

C2126 Description

 

After all IDs are registered, Diagnostic Trouble Code (DTC) C2126/26 is stored in the tire pressure warning ECU and the tire pressure warning light blinks for 1 minute and then comes on. When the tire pressure warning ECU and receiver successfully receives information from all the transmitters whose IDs are stored in the ECU, DTC C2126/26 is cleared and the tire pressure warning light goes off.