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C2122 Scion Code - No Signal from Transmitter ID 2 In Main Mode

Quick Answer

The C2122 diagnostic trouble code (DTC) for Scion vehicles indicates that there is no signal being received from Transmitter ID 2 in the main mode. Common causes include Failed Transmitter ID 2, Wiring issues or electrical connections related to the TPMS system, Faulty TPMS control module. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
C2122 Scion indicates No Signal from Transmitter ID 2 In Main Mode.
Common causes
Common causes include Failed Transmitter ID 2, Wiring issues or electrical connections related to the TPMS system, Faulty TPMS control module.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code C2122 Scion Description

The C2122 diagnostic trouble code (DTC) for Scion vehicles indicates that there is no signal being received from Transmitter ID 2 in the main mode. In simpler terms, this means that the vehicle's onboard computer system is not receiving the necessary information from the transmitter associated with ID 2. This transmitter is typically part of the tire pressure monitoring system (TPMS) in modern vehicles.

OBDII Code C2122 Scion - No Signal from Transmitter ID 2 In Main Mode
C2122 Scion Code - No Signal from Transmitter ID 2 In Main Mode

Common Causes of C2122 Scion

  1. Failed Transmitter ID 2.
  2. Wiring issues or electrical connections related to the TPMS system.
  3. Faulty TPMS control module.
  4. Interference from electronic devices or radio frequency signals.
  5. Low battery power in the transmitter.

Symptoms of C2122 Scion

  1. TPMS warning light illuminated on the dashboard.
  2. Inaccurate or inconsistent tire pressure readings.
  3. Loss of communication with other TPMS sensors.
  4. Erratic behavior of the TPMS system, such as false alerts or no alerts at all.

How to Fix C2122 Scion

  1. Begin by conducting a thorough inspection of the TPMS system, including all sensors and transmitters.
  2. Use a diagnostic tool to check for any stored fault codes and identify the specific cause of the signal loss from Transmitter ID 2.
  3. Replace the faulty transmitter if necessary, ensuring that it is programmed correctly to communicate with the vehicle's TPMS system.
  4. Check and repair any damaged wiring or connections related to the TPMS system.
  5. Perform a reset or relearn procedure for the TPMS system to ensure proper functionality.

Cost to Fix C2122 Scion

The typical repair costs for addressing a C2122 code in a Scion vehicle can vary depending on the specific cause of the issue and the required repairs. In general, replacing a faulty transmitter or repairing wiring issues related to the TPMS system can range from $100 to $300, including parts and labor. However, it is essential to note that diagnosis time and labor rates at auto repair shops can vary significantly based on factors such as location, vehicle make and model, and engine type. It is advisable to consult with a qualified mechanic or service center to obtain a more accurate estimate based on the specific circumstances.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about C2122 Scion Code

1. What are the common symptoms of OBDII code C2122 in a Scion?

The common symptoms include issues with the tire pressure monitoring system (TPMS) such as incorrect tire pressure readings or a TPMS warning light on the dashboard.

2. What does the OBDII code C2122 "No Signal from Transmitter ID 2 In Main Mode" mean for a Scion?

This code indicates that the TPMS system is not receiving a signal from the tire pressure sensor identified as Transmitter ID 2 in the main mode.

3. What are the possible causes of OBDII code C2122 in a Scion?

Common causes of this code include a faulty tire pressure sensor, low sensor battery, sensor placement issues, TPMS module malfunction, or wiring/connectivity problems.

4. How can I diagnose the OBDII code C2122 in my Scion?

Diagnosing this code typically involves checking the tire pressure sensor batteries, ensuring proper sensor placement, inspecting the wiring/connectivity, and using a TPMS diagnostic tool to identify the faulty component.

5. Is it safe to drive my Scion with OBDII code C2122 present?

It is generally safe to drive with this code, but it's important to address the underlying TPMS issue promptly to ensure accurate tire pressure monitoring for optimal safety and performance.

6. Can I reset the OBDII code C2122 in my Scion without fixing the issue?

Resetting the code without addressing the underlying problem may temporarily turn off the warning light, but the issue will likely reappear until the TPMS system is properly repaired.

7. How can I repair OBDII code C2122 in my Scion?

Repairing this code typically involves replacing the faulty tire pressure sensor, addressing battery issues, fixing wiring problems, or resetting the TPMS system after resolving the root cause.

8. Will OBDII code C2122 cause any long-term damage to my Scion?

While this code itself may not cause direct damage, ignoring the TPMS issue could lead to improper tire pressure maintenance, affecting fuel efficiency, tire wear, and overall driving safety in the long run.

9. Can extreme weather conditions trigger OBDII code C2122 in a Scion?

Extreme temperatures or changes in weather can sometimes affect tire pressure sensors and trigger this code. It's important to monitor and maintain tire pressure regularly, especially in such conditions.

10. How often should I check the tire pressure in my Scion to prevent OBDII code C2122?

It's recommended to check tire pressure at least once a month or before long trips to prevent TPMS issues like code C2122. Proper tire pressure maintenance helps ensure accurate sensor readings and safe driving conditions.

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