I ran into similar problem today. I am getting a C2126 - Transmitter ID Not Received (main) Car is a 2015 V6 Camry.
I am using the MP808TS. I used the PMV-C010 Tpms. All 4 sensors trigger and it successfully writes to ECU when i relearn but MIL is still on. All 4 tyres are not reading.
Owner of car said he has taken it to several workshop and same problem.
Is the TPMS not compatible with the car? Or ECU has locked up? What can issue be?