Engine-CodesToyota – C2122 2017 Toyota RAV4

C2122 2017 Toyota RAV4 Code - No Signal from Transmitter ID 2 In Main Mode

Quick Answer

The diagnostic trouble code C2122 for a 2017 Toyota RAV4 indicates that there is no signal being received from Transmitter ID 2 in Main Mode. Common causes include Dead or low battery in Transmitter ID 2 sensor, Damage to the TPMS sensor or wiring, Interference from other electronic devices affecting the signal transmission. 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 2017 Toyota RAV4 indicates No Signal from Transmitter ID 2 In Main Mode.
Common causes
Common causes include Dead or low battery in Transmitter ID 2 sensor, Damage to the TPMS sensor or wiring, Interference from other electronic devices affecting the signal transmission.
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.
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code C2122 2017 Toyota RAV4 Description

The diagnostic trouble code C2122 for a 2017 Toyota RAV4 indicates that there is no signal being received from Transmitter ID 2 in Main Mode. This typically refers to a malfunction in the tire pressure monitoring system (TPMS) of the vehicle. The TPMS is responsible for monitoring the air pressure in the tires and alerting the driver if there is a significant loss of pressure in any of the tires. When the system does not receive a signal from Transmitter ID 2, it can lead to inaccurate tire pressure readings or a complete failure of the TPMS.

OBDII Code C2122 2017 Toyota RAV4 - No Signal from Transmitter ID 2 In Main Mode
C2122 2017 Toyota RAV4 Code - No Signal from Transmitter ID 2 In Main Mode

Common Causes of C2122 2017 Toyota RAV4

  1. Dead or low battery in Transmitter ID 2 sensor
  2. Damage to the TPMS sensor or wiring
  3. Interference from other electronic devices affecting the signal transmission
  4. Faulty TPMS control module
  5. Software issues in the TPMS system

Symptoms of C2122 2017 Toyota RAV4

  1. TPMS warning light illuminated on the dashboard
  2. Inaccurate or fluctuating tire pressure readings displayed on the instrument cluster
  3. Loss of communication with Transmitter ID 2 in the TPMS system
  4. Difficulty maintaining proper tire pressure despite regular inflation checks

How to Fix C2122 2017 Toyota RAV4

  1. Begin by checking the tire pressure in all four tires manually to ensure they are properly inflated.
  2. Inspect Transmitter ID 2 sensor for any visible damage or corrosion. Replace the sensor if necessary.
  3. Use a TPMS diagnostic tool to reset the TPMS system and relearn the sensor IDs.
  4. If the issue persists, perform a thorough inspection of the TPMS control module and wiring for any faults or damage.
  5. Clear the diagnostic trouble code from the vehicle's system using an OBD-II scanner.

Cost to Fix C2122 2017 Toyota RAV4

The typical repair costs for addressing a no signal from Transmitter ID 2 in a 2017 Toyota RAV4 can range from $100 to $300, depending on the specific cause of the issue and the cost of replacement parts. This estimate includes the cost of a new TPMS sensor, diagnostic tools, and labor. It's important to note that the actual cost may vary based on the location, dealership rates, and the extent of the repair needed. It's recommended to consult with a certified mechanic or dealership for a more accurate cost estimate. Labor rates at auto repair shops can range from $80 to $150 per hour, so it's advisable to inquire about specific rates before proceeding with the repair.

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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 2017 Toyota RAV4 Code

1. What does the OBDII code C2122 mean on a 2017 Toyota RAV4?

C2122 indicates "No Signal from Transmitter ID 2 in Main Mode," meaning the Tire Pressure Monitoring System (TPMS) isn't receiving a signal from the second tire pressure sensor.

2. What are the symptoms of code C2122 in a 2017 Toyota RAV4?

Common symptoms include the TPMS warning light illuminating on the dashboard and potentially not displaying the tire pressure for one or more tires.

3. What causes the C2122 code to trigger on a Toyota RAV4?

The code is typically caused by a faulty tire pressure sensor, a dead sensor battery, signal interference, or issues with the TPMS receiver.

4. How do I diagnose the C2122 code on my 2017 Toyota RAV4?

Use a TPMS diagnostic tool to check the functionality of each tire pressure sensor and confirm if the second sensor is transmitting a signal. Inspect for physical damage or sensor battery issues.

5. Can a dead TPMS sensor battery cause the C2122 code?

Yes, a dead TPMS sensor battery is a common reason why the transmitter stops sending signals, leading to this code.

6. How can I fix the C2122 code on my Toyota RAV4?

The most common fix is to replace the malfunctioning tire pressure sensor. After replacement, the new sensor needs to be programmed to the vehicle's TPMS system.

7. Does the C2122 code require immediate attention?

While it doesn’t affect drivability, it’s important to address the issue promptly to ensure accurate tire pressure monitoring for safety and fuel efficiency.

8. Can I reset the TPMS system to fix the C2122 code?

Resetting the TPMS system may temporarily clear the code, but if the sensor is faulty or not transmitting, the code will return until the issue is resolved.

9. How much does it cost to fix the C2122 code on a 2017 Toyota RAV4?

Replacing a tire pressure sensor typically costs between $50 and $250, depending on parts and labor. Additional costs may apply if reprogramming is required.

10. Can extreme weather cause the C2122 code to appear?

Yes, extreme temperatures can sometimes disrupt TPMS sensor signals, but if the issue persists, the sensor or system should be inspected.

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