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

Quick Answer

The C2122 Toyota code indicates that there is no signal being received from Transmitter ID 2 in the main mode. Common causes include Faulty transmitter ID 2 in the TPMS, Low battery in the transmitter, Interference from electronic devices. 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 Toyota indicates No Signal from Transmitter ID 2 In Main Mode.
Common causes
Common causes include Faulty transmitter ID 2 in the TPMS, Low battery in the transmitter, Interference from electronic devices.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 05, 2024
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Code C2122 Toyota Description

The C2122 Toyota code indicates that there is no signal being received from Transmitter ID 2 in the main mode. This transmitter is a part of the tire pressure monitoring system (TPMS) in the vehicle. When this code is triggered, it means that the TPMS is not able to communicate with one of the sensors in the wheels. This can lead to inaccurate tire pressure readings, potentially causing safety issues and impacting the vehicle's performance.

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

Common Causes of C2122 Toyota

  1. Faulty transmitter ID 2 in the TPMS
  2. Low battery in the transmitter
  3. Interference from electronic devices
  4. Wiring or communication issues in the TPMS system
  5. Damage to the sensor or transmitter due to road conditions or tire changes

Symptoms of C2122 Toyota

  1. TPMS warning light illuminated on the dashboard
  2. Inaccurate or inconsistent tire pressure readings
  3. Increased tire wear due to improper inflation
  4. Decreased fuel efficiency
  5. Difficulty maintaining proper traction control

How to Fix C2122 Toyota

  1. Begin by checking the battery level in the transmitter ID 2 and replacing it if necessary.
  2. Inspect the wiring and connections in the TPMS system for any damage or loose connections.
  3. Use a TPMS diagnostic tool to reset the system and attempt to re-establish communication with the transmitter.
  4. If the issue persists, replace the faulty transmitter ID 2 in the affected wheel.
  5. Perform a reset of the TPMS system and ensure that all sensors are properly calibrated.

Cost to Fix C2122 Toyota

The cost of repairing a C2122 Toyota code can vary depending on the specific issue and the labor rates in your area. In general, replacing a faulty transmitter ID 2 in the TPMS system can range from $50 to $200 per sensor, excluding labor costs. The total repair cost, including parts and labor, can range from $100 to $400. It is recommended to consult with a professional technician to get an accurate estimate based on your vehicle's make and model.

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Information for Specific Toyota Models

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 Toyota Code

1. What are the common symptoms of OBDII code C2122 Toyota?

- Common symptoms include the TPMS (Tire Pressure Monitoring System) light illuminating on the dashboard and issues with monitoring tire pressure.

2. What could cause the OBDII code C2122 Toyota to trigger?

- The code can be triggered by a malfunction in the transmitter ID 2 in the TPMS system, such as a faulty sensor or communication issue.

3. How can I diagnose the issue related to OBDII code C2122 Toyota?

- Diagnosing the issue involves using a TPMS diagnostic tool to check the status of the transmitter ID 2 and inspecting the TPMS sensors for any visible damage.

4. Can a low tire pressure or flat tire cause the OBDII code C2122 Toyota?

- Yes, low tire pressure or a flat tire can trigger the code if it affects the proper functioning of the TPMS system and the transmitter ID 2.

5. What is the repair process for OBDII code C2122 Toyota?

- The repair process typically involves replacing the faulty TPMS sensor associated with transmitter ID 2 or addressing any communication issues within the TPMS system.

6. Are there any DIY tips for fixing the OBDII code C2122 Toyota?

- DIY tips include checking and adjusting tire pressures, ensuring proper sensor installation, and performing a TPMS reset procedure after any maintenance.

7. Can I still drive my vehicle with the OBDII code C2122 Toyota present?

- While you can still drive your vehicle with the code present, it is essential to address the TPMS issue promptly to ensure proper tire pressure monitoring for safety.

8. How long does it take to repair the OBDII code C2122 Toyota?

- The repair time can vary depending on the exact cause of the issue, but replacing a TPMS sensor typically takes around 30 minutes to an hour.

9. Will resetting the OBDII code C2122 Toyota make it go away permanently?

- Resetting the code may temporarily clear the TPMS light, but if the underlying issue with the transmitter ID 2 is not addressed, the code is likely to reappear.

10. Is it necessary to visit a dealership for repairs related to OBDII code C2122 Toyota?

- While a dealership may have specialized tools and expertise, independent repair shops and DIY enthusiasts can also effectively diagnose and repair issues related to the code.

Discuss the causes and fixes for C2122 Toyota OBDII Code

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  • For Toyota Prius, I use Techstream tool (software that connects a PC to the cars computer system through and OBD adapter). Normally if the tire pressure warning light on the dash blinks, this indicates low (or even too high) air pressure. If the warning light is constant on this indicates potential faulty tire pressure valve stem or other pressure recording fault (in which the tire pressure sensor transmits data via radio wave to the cars antenna), If constant on, this typically indicates a mechanically defective valve stem or battery in the valve stem is used up. On a constant on tire pressure light, a recent Techstream analysis reported all but one of the valve stems was recording data correctly. One way to confirm this is to compare actual tire pressure measurement with Techstream recording...they should be the same. Since all but one of the senors was recording correctly, this indicated the system in general is working correctly and that a valve stem is probably faulty. Each valve stem has its own unique identification number. Valve stems are also identified in Techstream as ID1, ID2, ID3, ID4 and ID5 (spare). To determine which valve stem is faulty, go to each tire, let a little air out of that tire and check on Techstream which tire has the low air pressure. Note that tires ID number and other identificaiton number. Put in proper air pressure and go to each tire and repeat the process to associate each tire with the relevant ID number. Once the ID number is determined, scribe some sort of code identification on the inside of the tire rim so that in the future you can identify which tire has which stem. This is necessary since in the future tires could be rotated, thereby adjusting tire location and ID location. Stems can be ordered online (Amazon). Order the number of stems needed. Note each stem has its own identification number. Have a tire shop replace the faulty stem with the new one. Install the tire. Then connect Techstream and log on and reprogramme the relevant tire with its new identification number. There are many online portals (youtube in particular) that provide step by step procedure for reprogramming new valve stems with Techstream (mainly you replace the old faulty valve stem identification number with the new one). Remember to write down the unique id number of the stem, which is used by the cars computer to identify each tire and report relevant pressure warnings.

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  • Thank you for the information!!

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