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C2142 Toyota Code - Transmitter ID 2 Error

Quick Answer

The C2142 diagnostic trouble code (DTC) for Toyota vehicles specifically refers to a Transmitter ID 2 Error. Common causes include Faulty key fob transmitter, Weak or dead battery in the key fob, Interference from other 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
C2142 Toyota indicates Transmitter ID 2 Error.
Common causes
Common causes include Faulty key fob transmitter, Weak or dead battery in the key fob, Interference from other 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 16, 2024
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Code C2142 Toyota Description

The C2142 diagnostic trouble code (DTC) for Toyota vehicles specifically refers to a Transmitter ID 2 Error. This code indicates a problem with the identification signal transmitted by the second transmitter in the vehicle's key fob system. In modern vehicles, key fobs are equipped with transmitters that communicate with the vehicle's immobilizer system to allow for keyless entry and engine starting. When the vehicle's computer detects an issue with the transmitter ID signal, it triggers the C2142 code.

OBDII Code C2142 Toyota - Transmitter ID 2 Error
C2142 Toyota Code - Transmitter ID 2 Error

Common Causes of C2142 Toyota

  1. Faulty key fob transmitter
  2. Weak or dead battery in the key fob
  3. Interference from other electronic devices
  4. Wiring or connection issues between the key fob and the vehicle's computer

Symptoms of C2142 Toyota

  1. Difficulty starting the engine
  2. Inability to unlock or lock the doors using the key fob
  3. Vehicle going into "no-start" mode
  4. Security system warning light illuminated on the dashboard

How to Fix C2142 Toyota

  1. Replace the battery in the key fob: Start by replacing the battery in the key fob to ensure that it is transmitting a strong signal.
  2. Check for interference: Move away from any electronic devices that may be causing interference with the key fob signal.
  3. Reprogram the key fob: If the issue persists, the key fob may need to be reprogrammed to sync with the vehicle's immobilizer system.
  4. Inspect wiring and connections: Check for any loose or damaged wiring connections between the key fob and the vehicle's computer.
  5. Replace the key fob: If all else fails, the key fob may need to be replaced with a new one to resolve the transmitter ID error.

Cost to Fix C2142 Toyota

The cost of repairing a Transmitter ID 2 Error (C2142) in a Toyota vehicle can vary depending on the specific cause of the issue. In general, replacing the battery in the key fob is a relatively inexpensive fix, typically costing between $5 and $20 for the battery itself. If the key fob needs to be reprogrammed or replaced, the cost can range from $50 to $200, including parts and labor.

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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 C2142 Toyota Code

1. What are the common symptoms of OBDII code C2142 in a Toyota related to Transmitter ID 2 Error?

The common symptoms include issues with the tire pressure monitoring system (TPMS), the TPMS warning light illuminating on the dashboard, and potential problems with the vehicle's transmission.

2. What are the possible causes of OBDII code C2142 in a Toyota related to Transmitter ID 2 Error?

Possible causes include a faulty tire pressure sensor, low tire pressure, issues with the TPMS module, wiring problems, or a malfunction in the vehicle's computer system.

3. How can I diagnose OBDII code C2142 in my Toyota related to Transmitter ID 2 Error?

Diagnosis can involve using an OBDII scanner to read the error code, checking the tire pressure of all four tires, inspecting the TPMS sensors for damage, and ensuring that the TPMS module is functioning correctly.

4. What are some repair tips for resolving OBDII code C2142 in a Toyota related to Transmitter ID 2 Error?

Repair tips include replacing a faulty tire pressure sensor, inflating or adjusting tire pressure as needed, repairing any damaged wiring, resetting the TPMS system, or seeking professional help for complex issues.

5. Can I continue driving my Toyota with OBDII code C2142 related to Transmitter ID 2 Error?

It is not recommended to ignore the TPMS warning light as it can affect your vehicle's safety and performance. It is best to address the underlying issue causing the error code as soon as possible.

6. Are there any DIY solutions to try before seeking professional help for OBDII code C2142 in a Toyota?

DIY solutions may include checking and adjusting tire pressure, inspecting the TPMS sensors for visible damage, and ensuring all wiring connections are secure. However, complex issues may require professional diagnosis and repair.

7. How much does it typically cost to repair OBDII code C2142 in a Toyota related to Transmitter ID 2 Error?

The cost of repair can vary depending on the specific cause of the issue. Replacing a tire pressure sensor or resetting the TPMS system may be relatively affordable, while more extensive repairs could be costlier.

8. Can weather conditions or driving habits contribute to triggering OBDII code C2142 in a Toyota related to Transmitter ID 2 Error?

Extreme weather conditions, such as temperature fluctuations, and aggressive driving habits can potentially impact tire pressure and trigger TPMS-related error codes like C2142. Regular maintenance and monitoring can help prevent such issues.

9. How long does it take to repair OBDII code C2142 in a Toyota related to Transmitter ID 2 Error?

The repair time can vary depending on the complexity of the issue. Simple fixes like resetting the TPMS system may take a short time, while replacing a faulty sensor or addressing wiring problems could take longer.

10. Will resetting the TPMS system clear OBDII code C2142 related to Transmitter ID 2 Error in a Toyota?

Resetting the TPMS system may temporarily clear the error code, but if the underlying issue persists, the code is likely to reappear. It is important to diagnose and address the root cause of the problem for a lasting solution.

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