AutoCodesToyota – C2122 2014 Toyota RAV4

C2122 2014 Toyota RAV4 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 2014 Toyota RAV4 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.
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Code Popularity 338
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 C2122 2014 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 C2122 2014 Toyota RAV4 - No Signal from Transmitter ID 2 In Main Mode - AutoCodes.com
C2122 2014 Toyota RAV4 Code - No Signal from Transmitter ID 2 In Main Mode

What are the Possible Causes of the DTC C2122 2014 Toyota RAV4?

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

How to Fix the DTC C2122 2014 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 C2122 2014 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 C2122 2014 Toyota RAV4 code?

Need more information on how to fix the C2122 2014 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 C2122 2014 Toyota RAV4 Code

What does the OBDII code C2122 mean for a 2014 Toyota RAV4?

C2122 indicates "No Signal from Transmitter ID 2 in Main Mode," meaning the vehicle's TPMS (Tire Pressure Monitoring System) is not receiving data from the second tire pressure sensor.

What are common symptoms of the C2122 code in a 2014 Toyota RAV4?

The most common symptom is the TPMS warning light on the dashboard. You may also experience inaccurate tire pressure readings or no data from one of the sensors.

What causes the C2122 code to appear in a 2014 Toyota RAV4?

Causes include a dead or weak sensor battery, damage to the sensor, interference from electronic devices, or a failure in the TPMS receiver module.

Can I drive my 2014 Toyota RAV4 with the C2122 code active?

Yes, you can drive the vehicle, but it’s important to address the issue promptly since the TPMS system is critical for monitoring tire pressure and preventing unsafe driving conditions.

How do I fix the C2122 code on a 2014 Toyota RAV4?

Start by inspecting the tire pressure sensor for damage or a dead battery. If necessary, replace the faulty sensor and reprogram the TPMS system.

How much does it cost to repair the C2122 code on a 2014 Toyota RAV4?

Repair costs can vary, but replacing a TPMS sensor typically costs between $50 and $200 per sensor, plus labor fees.

Do I need special tools to fix the C2122 code on a 2014 Toyota RAV4?

Yes, you may need a TPMS reset tool or programming device to reprogram the system after replacing a sensor.

Can a weak battery in the TPMS sensor cause the C2122 code on a 2014 Toyota RAV4?

Yes, a weak or dead sensor battery is a common cause of the C2122 code, as it prevents the sensor from transmitting data.

Will resetting the TPMS system clear the C2122 code on a 2014 Toyota RAV4?

Resetting the TPMS system may temporarily clear the code, but if the sensor is faulty, the code will likely return.

How often do TPMS sensors need to be replaced in a 2014 Toyota RAV4?

TPMS sensors typically last 5-10 years depending on usage and battery life. Regular inspection can help identify issues before failure.

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