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Engine-Codes – Generic – C2122

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

Quick Answer

The code C2122 indicates that there is no signal being received from Transmitter ID 2 in the main mode. Common causes include Faulty transmitter ID 2, Low or dead battery in the transmitter, Poor connection or wiring issues in the TPMS system. 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 indicates No Signal from Transmitter ID 2 In Main Mode.
Common causes
Common causes include Faulty transmitter ID 2, Low or dead battery in the transmitter, Poor connection or wiring issues in the TPMS system.
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 Aug 19, 2024
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Code C2122 Description

The code C2122 indicates that there is no signal being received from Transmitter ID 2 in the main mode. This transmitter is typically part of the tire pressure monitoring system (TPMS) in modern vehicles. The TPMS is responsible for monitoring the air pressure in each tire and alerting the driver if there is a significant loss of pressure. When the vehicle's computer does not receive a signal from Transmitter ID 2, it can lead to inaccurate tire pressure readings or a complete loss of communication with the TPMS system. This can potentially compromise the vehicle's safety and fuel efficiency.

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

Common Causes of C2122

  1. Faulty transmitter ID 2.
  2. Low or dead battery in the transmitter.
  3. Poor connection or wiring issues in the TPMS system.
  4. Interference from external sources affecting the transmitter signal.

Symptoms of C2122

  1. TPMS warning light illuminated on the dashboard.
  2. Inaccurate tire pressure readings displayed on the dashboard.
  3. Loss of communication with the TPMS system.
  4. Potential impact on vehicle stability and handling.

How to Fix C2122

  1. Check the battery in Transmitter ID 2 and replace if necessary.
  2. Inspect the wiring and connections in the TPMS system for any damage or loose connections.
  3. Reset the TPMS system and reprogram the transmitters.
  4. Replace the faulty Transmitter ID 2 if needed.
  5. Clear the diagnostic trouble codes and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix C2122

The cost of repairing a no signal from Transmitter ID 2 in main mode issue can vary depending on the specific cause of the problem and the vehicle's make and model. However, a rough estimate for parts and labor could range from $100 to $300. It's important to note that diagnostic time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate.

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Code C2122 Information for Specific Makes

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 Code

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

The common symptoms of OBDII code C2122 include a malfunction indicator light (MIL) illuminated on the dashboard, tire pressure monitoring system (TPMS) warning light activated, and potential issues with the transmission.

2. What could cause the OBDII code C2122 to be triggered?

The OBDII code C2122, indicating "No Signal from Transmitter ID 2 In Main Mode," is typically triggered by a faulty tire pressure sensor in one of the wheels, a malfunctioning TPMS module, or damaged wiring/connectors.

3. How can I diagnose the issue related to OBDII code C2122?

To diagnose the issue related to OBDII code C2122, you can use a TPMS diagnostic tool to check the tire pressure sensor readings, inspect the wiring and connectors for any damage, and perform a reset procedure for the TPMS system.

4. Can I still drive my vehicle with the OBDII code C2122 present?

It is generally safe to drive your vehicle with the OBDII code C2122 present, but you should address the underlying issue as soon as possible to ensure proper functioning of the TPMS system and to avoid potential safety risks.

5. How can I repair the OBDII code C2122 issue?

Repairing the OBDII code C2122 issue may involve replacing the faulty tire pressure sensor, repairing damaged wiring or connectors, resetting the TPMS system, or recalibrating the TPMS sensors using a diagnostic tool.

6. Are there any DIY tips for fixing the OBDII code C2122 problem?

While some basic troubleshooting steps can be performed by DIY enthusiasts, it is recommended to consult a professional mechanic for accurate diagnosis and repair of the OBDII code C2122 to ensure the TPMS system functions correctly.

7. Will resetting the TPMS system resolve the OBDII code C2122 issue?

In some cases, resetting the TPMS system may resolve the OBDII code C2122 issue if it was triggered by a temporary sensor communication error. However, if the problem persists, further diagnostics and repairs may be necessary.

8. Can extreme weather conditions affect the triggering of OBDII code C2122?

Extreme weather conditions, such as very low temperatures, can sometimes lead to sensor communication issues and trigger the OBDII code C2122. Ensuring proper tire pressure and system calibration can help mitigate such effects.

9. Is OBDII code C2122 a common problem in certain vehicle makes or models?

OBDII code C2122 related to "No Signal from Transmitter ID 2 In Main Mode" can occur in various vehicle makes and models equipped with TPMS systems, especially if there are issues with the tire pressure sensors or TPMS module.

10. How can I prevent the recurrence of OBDII code C2122 in the future?

To prevent the recurrence of OBDII code C2122, it is essential to regularly check and maintain proper tire pressure, inspect the TPMS sensors for damage, and address any issues promptly to ensure the system operates correctly.

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