C2123 Code - No Signal from Transmitter ID 3 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
- C2123 indicates No Signal from Transmitter ID 3 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 C2123 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 C2123?
- Faulty Tire Pressure Warning Valve and Transmitter
- Faulty Tire Pressure Warning ECU and Receiver
How to Fix the DTC C2123?
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 C2123 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
- C2123 Lexus — No Signal from Transmitter ID 3 In Main Mode
- C2123 Scion — No Signal from Transmitter ID 3 In Main Mode
- C2123 Subaru — Transmitter 3 No Data
- C2123 Toyota — No Signal from Transmitter ID 3 In Main Mode
Frequently Asked Questions about C2123 Code
1. What are the common symptoms of OBDII code C2123?
The common symptoms of OBDII code C2123 include a malfunction indicator light (MIL) illuminated on the dashboard, tire pressure monitor system (TPMS) warning light activated, and potential loss of communication with the TPMS system.
2. What are the possible causes of OBDII code C2123?
The possible causes of OBDII code C2123 are a faulty transmitter ID 3 in main mode, issues with the TPMS sensors, wiring or communication system, low tire pressure, or a malfunctioning TPMS control module.
3. How can I diagnose the No Signal from Transmitter ID 3 In Main Mode issue?
Diagnosing OBDII code C2123 involves using a diagnostic scanner to retrieve the specific fault code, checking the TPMS sensors for proper functioning, inspecting the wiring and connections for any damage or corrosion, and verifying tire pressure levels.
4. What are some repair tips for fixing OBDII code C2123?
Repair tips for addressing OBDII code C2123 include replacing the faulty transmitter ID 3, repairing any damaged wiring or connections, ensuring proper tire pressure in all tires, and resetting the TPMS system after making necessary repairs.
5. Can I drive my vehicle with OBDII code C2123?
It is not recommended to drive your vehicle with OBDII code C2123 present, as it indicates a potential issue with the TPMS system that could compromise your safety on the road. It is advised to address the problem promptly.
6. How much does it cost to repair OBDII code C2123?
The cost to repair OBDII code C2123 can vary depending on the exact cause of the issue. Replacing a faulty transmitter ID 3 may cost around $50 to $100, while repairing wiring or addressing TPMS sensor problems could range from $100 to $300 or more.
7. Can I reset the OBDII code C2123 myself?
You can attempt to reset OBDII code C2123 yourself by using a diagnostic scanner to clear the fault code after addressing the underlying issue. However, if the problem persists, it is recommended to seek professional assistance for proper diagnosis and repair.
8. How do I prevent OBDII code C2123 from recurring?
To prevent OBDII code C2123 from recurring, it is essential to regularly monitor tire pressure, ensure proper maintenance of the TPMS system, promptly address any TPMS warning lights, and follow manufacturer recommendations for sensor replacement.
9. Is OBDII code C2123 a serious issue?
While OBDII code C2123 may not pose an immediate safety risk, it is still important to address the underlying problem to ensure the proper functioning of the TPMS system. Ignoring the issue could lead to inaccurate tire pressure readings and potential safety hazards.
10. How long does it take to repair OBDII code C2123?
The repair time for OBDII code C2123 can vary depending on the cause of the issue and the extent of repairs needed. In general, resolving this code could take anywhere from 1 to 3 hours, but it is best to consult a professional for a more accurate estimate based on your specific situation.
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