AutoCodes – Toyota – C14A4 Toyota

C14A4 Toyota Code - Output Circuit Temperature High / Over Current

Quick Answer

The Trailer Brake Control ECU (Brake Control with Bracket Relay) is connected via the trailer socket and direct line. Common causes include Faulty Trailer Brake Control ECU (Brake Control with Bracket Relay), Trailer Brake Control ECU (Brake Control with Bracket Relay) harness is open or shorted, Trailer Brake Control ECU (Brake Control with Bracket Relay) circuit poor electrical connection. 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
C14A4 Toyota indicates Output Circuit Temperature High / Over Current.
Common causes
Common causes include Faulty Trailer Brake Control ECU (Brake Control with Bracket Relay), Trailer Brake Control ECU (Brake Control with Bracket Relay) harness is open or shorted, Trailer Brake Control ECU (Brake Control with Bracket Relay) circuit poor electrical connection.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 2,671
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Oct 25, 2020
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Code C14A4 Toyota Description

The Trailer Brake Control ECU (Brake Control with Bracket Relay) is connected via the trailer socket and direct line. The Trailer Brake Control ECU (Brake Control with Bracket Relay) outputs a signal to the trailer socket. Trailer Brake Control ECU (Brake Control with Bracket Relay) sets the OBDII code when the output circuit temperature is not to factory specifications.
OBDII Code C14A4 Toyota - Output Circuit Temperature High / Over Current - AutoCodes.com
C14A4 Toyota Code - Output Circuit Temperature High / Over Current

What are the Possible Causes of the DTC C14A4 Toyota?

  • Faulty Trailer Brake Control ECU (Brake Control with Bracket Relay)
  • Trailer Brake Control ECU (Brake Control with Bracket Relay) harness is open or shorted
  • Trailer Brake Control ECU (Brake Control with Bracket Relay) circuit poor electrical connection

How to Fix the DTC C14A4 Toyota?

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 C14A4 Toyota 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 C14A4 Toyota code?

Need more information on how to fix the C14A4 Toyota code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C14A4 Toyota code diagnosed by a professional: Find a repair shop in your area

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 C14A4 Toyota Code

1. What are the common symptoms of OBDII code C14A4 in a Toyota?

The common symptoms of OBDII code C14A4 include the check engine light illuminating on the dashboard, abnormal engine performance, and potential overheating issues.

2. What could cause the OBDII code C14A4 to appear in a Toyota?

The OBDII code C14A4 in a Toyota is typically triggered by a faulty output circuit temperature sensor, high resistance in the circuit, or excessive current flowing through the circuit.

3. How can I diagnose the OBDII code C14A4 in my Toyota?

Diagnosing OBDII code C14A4 in a Toyota involves using a scan tool to retrieve the trouble code, inspecting the output circuit temperature sensor and its wiring for any damage, and checking for any loose connections.

4. Can I continue driving my Toyota with the OBDII code C14A4 present?

It is not recommended to continue driving your Toyota with the OBDII code C14A4 present, as it can lead to potential engine damage or overheating issues. It is best to address the issue promptly.

5. What are some repair tips for fixing the OBDII code C14A4 in a Toyota?

Repair tips for fixing the OBDII code C14A4 in a Toyota include replacing the faulty output circuit temperature sensor, repairing any damaged wiring or connections, and clearing the trouble code with a scan tool.

6. Is it possible to reset the OBDII code C14A4 in a Toyota without making any repairs?

While it is possible to clear the OBDII code C14A4 with a scan tool without making any repairs, it is not recommended as the underlying issue causing the code may persist and lead to further problems.

7. How much does it typically cost to repair the OBDII code C14A4 in a Toyota?

The cost of repairing the OBDII code C14A4 in a Toyota can vary depending on the extent of the issue and the specific repairs needed. It is advisable to consult a professional mechanic for an accurate estimate.

8. Can a DIY enthusiast fix the OBDII code C14A4 in a Toyota?

A DIY enthusiast with the necessary tools and knowledge of automotive repairs may be able to fix the OBDII code C14A4 in a Toyota, especially if it involves simple tasks like sensor replacement or wiring repair.

9. How urgent is it to address the OBDII code C14A4 in a Toyota?

It is recommended to address the OBDII code C14A4 in a Toyota as soon as possible to prevent any potential damage to the engine or other components. Ignoring the code could lead to more costly repairs down the line.

10. Can weather conditions affect the appearance of the OBDII code C14A4 in a Toyota?

Extreme weather conditions, such as excessive heat or cold, can potentially affect the output circuit temperature sensor and trigger the OBDII code C14A4 in a Toyota. It is important to keep this in mind when diagnosing the issue.

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