C2122 Code - No Signal from Transmitter ID 2 In Main Mode
Quick Answer
The Tire Pressure Warning Valve and Transmitters that are installed in the tire and wheel assemblies measure the tire pressures. Common causes include Faulty Tire Pressure Warning Valve and Transmitter, Faulty Tire Pressure Warning ECU and Receiver. 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 Tire Pressure Warning Valve and Transmitter, Faulty Tire Pressure Warning ECU and Receiver.
- 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.
Code C2122 Description
The Tire Pressure Warning Valve and Transmitters constantly send radio waves to the Tire Pressure Warning ECU and Receiver.
Under the conditions below, the Tire Pressure Warning ECU and Receiver is unable to receive the signals from the Tire Pressure Warning Valve and Transmitters, and a Diagnostic Trouble Code (DTC) is stored.
- Facilities or devices that use similar radio frequencies are located in the vicinity of the vehicle.
- Devices using similar radio frequencies are used in the vehicle.
- The ID of the tire pressure warning valve and transmitter is mistyped during registration.
- A tire, wheel, and/or transmitter from a different vehicle is installed.
What are the Possible Causes of the DTC C2122?
- Faulty Tire Pressure Warning Valve and Transmitter
- Faulty Tire Pressure Warning ECU and Receiver
How to Fix the DTC C2122?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C2122 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Information for Specific Makes
- C2122 Lexus — No Signal from Transmitter ID 2 In Main Mode
- C2122 Scion — No Signal from Transmitter ID 2 In Main Mode
- C2122 Subaru — Transmitter 2 No Data
- C2122 Toyota — No Signal from Transmitter ID 2 In Main Mode
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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