Skip to content

C2121 Code – No Signal from Transmitter ID 1 In Main Mode

What are the Possible Causes of the Code C2121?
  • Faulty Tire Pressure Warning Valve and Transmitter
  • Faulty Tire Pressure Warning ECU and Receiver
  • Need help with this OBD II code? Our mechanics are available within west Michigan to help. Outside of our service area? Visit our Car Help Section where you can ask questions and get answers.

Leave a Reply