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Engine-Codes – Scion – C2142 Scion

C2142 Scion Code - Transmitter ID 2 Error

Quick Answer

The C2142 code for Scion vehicles refers to a Transmitter ID 2 Error. Common causes include Faulty transmitter in the key fob, Weak or dead battery in the key fob, Interference from other electronic devices affecting the signal. 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 Scion indicates Transmitter ID 2 Error.
Common causes
Common causes include Faulty transmitter in the key fob, Weak or dead battery in the key fob, Interference from other electronic devices affecting the signal.
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 15, 2024
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Code C2142 Scion Description

The C2142 code for Scion vehicles refers to a Transmitter ID 2 Error. This code indicates a problem with the identification signal from the second transmitter in the vehicle's keyless entry system. The keyless entry system allows drivers to unlock and lock their vehicles remotely, providing convenience and security. When this error code is triggered, it can affect the proper functioning of the keyless entry system, potentially leading to issues with locking and unlocking the vehicle.

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

Common Causes of C2142 Scion

  1. Faulty transmitter in the key fob.
  2. Weak or dead battery in the key fob.
  3. Interference from other electronic devices affecting the signal.
  4. Wiring or connection issues between the transmitter and receiver.
  5. Faulty receiver in the vehicle.

Symptoms of C2142 Scion

  1. Difficulty unlocking or locking the vehicle using the keyless entry system.
  2. Intermittent response from the keyless entry system.
  3. Warning light on the dashboard related to the keyless entry system.
  4. Inability to start the vehicle due to a communication error with the keyless entry system.

How to Fix C2142 Scion

  1. Replace the battery in the key fob to ensure a strong signal transmission.
  2. Try reprogramming the key fob to the vehicle to establish a proper connection.
  3. Inspect the wiring and connections between the transmitter and receiver for any damage or loose connections.
  4. If the issue persists, consider replacing the key fob or the receiver in the vehicle.
  5. Consult a professional automotive technician for advanced diagnostics and repairs if the problem persists.

Cost to Fix C2142 Scion

The cost of repairing a Transmitter ID 2 Error in a Scion vehicle can vary depending on the specific cause of the issue. Replacing the battery in the key fob is a relatively inexpensive fix, typically costing around $5-$20 for the battery. However, if the issue is more complex and requires replacing the key fob or receiver, the cost can range from $50-$200 or more, including parts and labor.

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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 C2142 Scion Code

1. What does the OBDII code C2142 mean on a Scion?

C2142 indicates a "Transmitter ID 2 Error," which typically relates to an issue with the tire pressure monitoring system (TPMS), specifically one of the TPMS sensors.

2. What are the common symptoms of a C2142 code on a Scion?

Common symptoms include the TPMS warning light illuminating on the dashboard and potentially inaccurate or missing tire pressure readings.

3. What causes the C2142 code to appear?

The code is usually caused by a faulty or damaged TPMS sensor, a dead sensor battery, incorrect programming, or interference with the TPMS signal.

4. Can a weak or dead battery in a TPMS sensor trigger the C2142 code?

Yes, a weak or dead TPMS sensor battery is a common cause of the C2142 code, as it prevents the sensor from transmitting the necessary data.

5. How is the C2142 code diagnosed?

A technician will use a TPMS tool to scan the sensors, check for signal strength, verify proper programming, and inspect for physical damage to the sensors.

6. Can I drive my Scion with the C2142 code active?

While you can still drive the car, it’s not recommended to ignore the issue, as the TPMS system may not function properly, potentially leading to undetected tire pressure problems.

7. How do I fix the C2142 code on my Scion?

Fixes include replacing the faulty TPMS sensor, reprogramming the system to recognize the sensor, or addressing any signal interference.

8. Do TPMS sensors need to be reprogrammed after replacement?

Yes, new TPMS sensors need to be registered or reprogrammed to the vehicle's ECU to resolve the C2142 code.

9. Can harsh weather conditions cause the C2142 code?

Extreme temperatures can sometimes interfere with TPMS sensor operation, but persistent issues likely indicate a faulty sensor.

10. How much does it cost to fix the C2142 code on a Scion?

The cost can vary but typically ranges from $50 to $250 per sensor, depending on whether the sensor is repaired or replaced and if reprogramming is needed.

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