AutoCodes – Toyota – C2125 2016 Toyota RAV4

C2125 2016 Toyota RAV4 Code - No Signal from Transmitter ID 5 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
C2125 2016 Toyota RAV4 indicates No Signal from Transmitter ID 5 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.
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Code Popularity 185
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 15, 2023
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Code C2125 2016 Toyota RAV4 Description

The Tire Pressure Warning Valve and Transmitters that are installed in the tire and wheel assemblies measure the tire pressures. The measured values are transmitted to the Tire Pressure Warning ECU and Receiver in the vehicle as radio waves. The ECU compares the measured air pressure values with the air pressure threshold. When the measured air pressure value is less than this threshold, the warning light in the combination meter assembly illuminates.
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.
OBDII Code C2125 2016 Toyota RAV4 - No Signal from Transmitter ID 5 In Main Mode - AutoCodes.com
C2125 2016 Toyota RAV4 Code - No Signal from Transmitter ID 5 In Main Mode

What are the Possible Causes of the DTC C2125 2016 Toyota RAV4?

  • Faulty Tire Pressure Warning Valve and Transmitter
  • Faulty Tire Pressure Warning ECU and Receiver

How to Fix the DTC C2125 2016 Toyota RAV4?

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 C2125 2016 Toyota RAV4 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.

Need more information about the C2125 2016 Toyota RAV4 code?

Need more information on how to fix the C2125 2016 Toyota RAV4 code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 C2125 2016 Toyota RAV4 Code

1. What are the common symptoms of OBDII code C2125 in a 2016 Toyota RAV4?

The common symptoms include a malfunction indicator light (MIL) illuminated on the dashboard, tire pressure warning light flashing, and the tire pressure monitoring system (TPMS) not functioning properly.

2. What does the OBDII code C2125 "No Signal from Transmitter ID 5 In Main Mode" mean for a 2016 Toyota RAV4?

This code indicates a communication issue between the TPMS sensor transmitter ID 5 and the vehicle's TPMS system during normal driving conditions.

3. What are the possible causes of OBDII code C2125 in a 2016 Toyota RAV4?

Possible causes include a faulty TPMS sensor transmitter ID 5, TPMS sensor battery depletion, TPMS sensor damage, wiring issues, or a malfunction in the TPMS control module.

4. How can I diagnose the source of the "No Signal from Transmitter ID 5 In Main Mode" error code in my 2016 Toyota RAV4?

You can diagnose the issue by using a TPMS diagnostic tool to check for communication signals from the TPMS sensor transmitter ID 5, inspecting the sensor for physical damage, and testing the sensor's battery voltage.

5. Can I reset the OBDII code C2125 in my 2016 Toyota RAV4 without fixing the underlying issue?

While you can clear the error code using an OBDII scanner, it is recommended to address the root cause of the problem to ensure the TPMS system operates correctly and to prevent potential safety hazards.

6. Are there any DIY repair tips for resolving OBDII code C2125 in a 2016 Toyota RAV4?

DIY repair tips include checking and replacing the TPMS sensor transmitter ID 5 if necessary, ensuring proper sensor installation and programming, and verifying the TPMS system's functionality after repair.

7. How much does it typically cost to repair OBDII code C2125 in a 2016 Toyota RAV4 at a dealership or a repair shop?

The cost of repair can vary depending on the exact cause of the issue, but it may involve sensor replacement, wiring repairs, or module reprogramming. Costs can range from around $100 to $300 or more, including parts and labor.

8. Is it safe to continue driving my 2016 Toyota RAV4 with the OBDII code C2125 present?

It is not recommended to ignore the TPMS system error, as it can affect your vehicle's safety and performance. It's best to address the issue promptly to ensure proper tire pressure monitoring and system functionality.

9. Can extreme weather conditions or tire rotations trigger the OBDII code C2125 in a 2016 Toyota RAV4?

While extreme weather can impact tire pressure readings, it is unlikely to trigger this specific code. However, improper tire rotations or changes can potentially lead to TPMS communication issues and trigger the error code.

10. How often should I check and maintain the TPMS sensors in my 2016 Toyota RAV4 to prevent OBDII code C2125 from reoccurring?

Regularly inspecting and maintaining your TPMS sensors, including checking tire pressure, ensuring proper sensor installation, and replacing worn-out sensors, can help prevent the recurrence of OBDII code C2125 in your vehicle.

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