C2123 Lexus Code - No Signal from Transmitter ID 3 In Main Mode
Quick Answer
The C2123 diagnostic trouble code for Lexus vehicles indicates that there is no signal being received from Transmitter ID 3 in the main mode. Common causes include Faulty transmitter ID 3, Wiring or connection issues between the transmitter and the vehicle's system, Low battery in the transmitter. 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 Lexus indicates No Signal from Transmitter ID 3 In Main Mode.
- Common causes
- Common causes include Faulty transmitter ID 3, Wiring or connection issues between the transmitter and the vehicle's system, Low battery in the transmitter.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code C2123 Lexus Description
The C2123 diagnostic trouble code for Lexus vehicles indicates that there is no signal being received from Transmitter ID 3 in the main mode. In simpler terms, this means that the vehicle's system is not able to communicate with the transmitter associated with ID 3, which can lead to various issues with the vehicle's performance and safety systems. Transmitters are typically used in keyless entry systems, tire pressure monitoring systems, and other wireless communication systems within the vehicle.
Common Causes of C2123 Lexus
- Faulty transmitter ID 3
- Wiring or connection issues between the transmitter and the vehicle's system
- Low battery in the transmitter
- Interference from other electronic devices
- Malfunctioning receiver in the vehicle's system
Symptoms of C2123 Lexus
- Keyless entry system not working properly
- Inaccurate tire pressure readings
- Warning lights related to keyless entry or tire pressure monitoring systems
- Difficulty starting the vehicle
- Unresponsive buttons on the key fob
How to Fix C2123 Lexus
- Check the battery in Transmitter ID 3 and replace if necessary.
- Inspect the wiring and connections between the transmitter and the vehicle's system for any damage or loose connections.
- Test the transmitter and receiver to ensure they are functioning properly.
- Reset the keyless entry system and reprogram the transmitter if needed.
- Clear the diagnostic trouble code and test the affected systems to ensure proper functionality.
Cost to Fix C2123 Lexus
The typical repair costs for addressing the C2123 code can vary depending on the specific cause of the issue. In general, the cost of replacing a transmitter or repairing wiring issues can range from $100 to $300, including parts and labor. However, additional costs may apply if further diagnostics or repairs are needed. It is recommended to consult with a qualified mechanic or dealership for a more accurate estimate based on the specific circumstances of the vehicle. Labor rates at auto repair shops can vary, so it's advisable to inquire about rates in your local area for a more precise cost estimate.
Need more information about the C2123 Lexus code?
Need more information on how to fix the C2123 Lexus code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the C2123 Lexus code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about C2123 Lexus Code
1. What does the OBDII code C2123 mean on a Lexus?
C2123 indicates that the vehicle's tire pressure monitoring system (TPMS) is not receiving a signal from the tire pressure sensor associated with Transmitter ID 3 in main mode.
2. What are the symptoms of code C2123 on a Lexus?
Common symptoms include a TPMS warning light on the dashboard and potentially inaccurate or missing tire pressure readings from one of the tires.
3. What causes the C2123 code to appear?
This code is typically caused by a malfunctioning or dead TPMS sensor, signal interference, a damaged wheel sensor, or an issue with the TPMS module.
4. How can I diagnose the C2123 code on a Lexus?
Use a scan tool that can read TPMS data to check for sensor IDs and signal status. Inspect the physical condition of the sensors and verify that the sensor ID matches the one programmed into the vehicle.
5. Can a dead TPMS sensor battery trigger the C2123 code?
Yes, a dead or low TPMS sensor battery is a common cause of this code, as it prevents the sensor from transmitting data.
6. How do I fix the C2123 code on my Lexus?
Replace the faulty TPMS sensor, reprogram the sensor ID if needed, and reset the TPMS system. Ensure all sensors are functioning and properly paired.
7. Do I need to replace all TPMS sensors if I get the C2123 code?
No, only the faulty sensor associated with Transmitter ID 3 needs to be replaced unless the other sensors are also failing or near the end of their battery life.
8. Will the TPMS warning light turn off automatically after fixing the C2123 code?
In most cases, the light will turn off after driving a short distance if the issue is resolved. Otherwise, you may need to manually reset the TPMS system using a scan tool.
9. Can I still drive my Lexus with the C2123 code active?
Yes, but the TPMS system may not properly monitor tire pressure, which could increase the risk of driving on underinflated or overinflated tires.
10. How much does it cost to repair a C2123 code on a Lexus?
The cost varies depending on the labor rates and the price of the replacement TPMS sensor, but it typically ranges between $50 and $150 per sensor, plus programming and installation fees.
Discuss the causes and fixes for C2123 Lexus OBDII Code
Code C2123 Lexus comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.