AutoCodes – Lexus – C14A4 Lexus

C14A4 Lexus 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 Lexus 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.
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Code Popularity 778
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 Lexus 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 Lexus - Output Circuit Temperature High / Over Current - AutoCodes.com
C14A4 Lexus Code - Output Circuit Temperature High / Over Current

What are the Possible Causes of the DTC C14A4 Lexus?

  • 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 Lexus?

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 Lexus 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 Lexus code?

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

Need Help with the Code?

Get the C14A4 Lexus 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 Lexus Code

1. What are the common symptoms of OBDII code C14A4 in a Lexus related to Output Circuit Temperature High / Over Current?

The common symptoms include engine overheating, illuminated check engine light, and potential issues with vehicle performance.

2. What are the possible causes of OBDII code C14A4 in a Lexus indicating Output Circuit Temperature High / Over Current?

Possible causes include a faulty coolant temperature sensor, issues with the cooling system, a damaged wiring harness, or a malfunctioning engine control module.

3. How can I diagnose the OBDII code C14A4 in a Lexus related to Output Circuit Temperature High / Over Current?

Diagnosis involves using an OBDII scanner to retrieve the trouble code, inspecting the cooling system components, checking the coolant temperature sensor, and testing the wiring for any faults.

4. Can I continue driving my Lexus with OBDII code C14A4 indicating Output Circuit Temperature High / Over Current?

It is not recommended to drive the vehicle with this code as it can lead to engine overheating and potential damage. It is advised to address the issue promptly.

5. How should I repair OBDII code C14A4 in my Lexus signaling Output Circuit Temperature High / Over Current?

Repair may involve replacing the faulty coolant temperature sensor, repairing any damaged wiring, ensuring proper cooling system function, and clearing the trouble code.

6. Are there any DIY tips for addressing OBDII code C14A4 in a Lexus related to Output Circuit Temperature High / Over Current?

DIY tips include checking coolant levels, inspecting for visible damage in the wiring, and ensuring the cooling system is functioning properly before seeking professional assistance if needed.

7. What are the potential risks of ignoring OBDII code C14A4 in a Lexus indicating Output Circuit Temperature High / Over Current?

Ignoring this code can lead to engine overheating, potential engine damage, reduced fuel efficiency, and further costly repairs if left unresolved.

8. How long does it typically take to repair OBDII code C14A4 in a Lexus related to Output Circuit Temperature High / Over Current?

The repair time can vary depending on the exact cause of the code, but it may take anywhere from a few hours to a day, depending on the complexity of the issue.

9. Can extreme weather conditions contribute to triggering OBDII code C14A4 in a Lexus signaling Output Circuit Temperature High / Over Current?

Extreme weather conditions, such as prolonged high temperatures, can potentially exacerbate issues related to engine temperature and cooling system function, leading to the triggering of this code.

10. Is it necessary to reset the ECU after repairing OBDII code C14A4 in a Lexus related to Output Circuit Temperature High / Over Current?

It is recommended to clear the trouble code and reset the ECU after repairing the issue to ensure proper functioning and to verify that the problem has been successfully addressed.

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