AutoCodes – Generic – C14A5

C14A5 Code - Output Circuit Unintended Current

Quick Answer

The Trailer Brake Control ECU monitors itself. Common causes include Faulty Trailer Brake Control ECU, Trailer Brake Control ECU harness is open or shorted, Trailer Brake Control ECU 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: C14A5 indicates Output Circuit Unintended Current.
Common causes: Common causes include Faulty Trailer Brake Control ECU, Trailer Brake Control ECU harness is open or shorted, Trailer Brake Control ECU 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 2,261

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Oct 25, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C14A5 Description

The Trailer Brake Control ECU monitors itself. The Trailer Brake Control ECU sets the OBDII code when it detects an internal malfunction.

OBDII Code C14A5 - Output Circuit Unintended Current - AutoCodes.com — C14A5 Code - Output Circuit Unintended Current

What does this mean?

What are the Possible Causes of the DTC C14A5?

Faulty Trailer Brake Control ECU
Trailer Brake Control ECU harness is open or shorted
Trailer Brake Control ECU circuit poor electrical connection

How to Fix the DTC C14A5?

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 C14A5 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 C14A5 code?

Need more information on how to fix the C14A5 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C14A5 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C14A5 Lexus — Output Circuit Unintended Current
C14A5 Toyota — Output Circuit Unintended Current

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 C14A5 Code

1. What are the common symptoms of OBDII code C14A5 (Output Circuit Unintended Current)?

The common symptoms include illuminated Check Engine Light (CEL), rough engine performance, and potential stalling or hesitation.

2. What can cause the OBDII code C14A5 to trigger?

The code C14A5 typically triggers due to issues with the wiring harness, damaged connectors, or a faulty control module.

3. How serious is the OBDII code C14A5?

While the code itself may not directly impact vehicle safety, it can lead to engine performance issues and potential stalling, making it important to address promptly.

4. How can I diagnose the cause of OBDII code C14A5?

Diagnosing the code involves inspecting the wiring harness for damage, checking the connectors for corrosion or loose connections, and testing the control module for faults.

5. Can I drive my vehicle with the OBDII code C14A5?

It is not recommended to drive your vehicle extensively with this code active, as it may lead to further damage or safety issues. It's best to address the underlying problem as soon as possible.

6. How can I repair the Output Circuit Unintended Current issue related to code C14A5?

Repairing the issue involves repairing or replacing damaged wiring, cleaning or replacing connectors, and potentially replacing the control module if deemed faulty.

7. Will resetting the OBDII code C14A5 make it go away permanently?

Simply resetting the code without addressing the underlying issue will not make it go away permanently. The root cause must be diagnosed and repaired to prevent the code from reappearing.

8. Can a DIY enthusiast fix the OBDII code C14A5 issue?

Depending on your skill level and access to tools, a DIY enthusiast may be able to address the issue by inspecting wiring, connectors, and possibly replacing components. However, professional diagnosis and repair may be necessary for complex cases.

9. How much does it typically cost to repair the OBDII code C14A5 issue?

The cost of repair can vary widely depending on the extent of the damage and the specific components that need to be repaired or replaced. It's advisable to obtain quotes from qualified mechanics for an accurate estimate.

10. Is it possible for the OBDII code C14A5 to reoccur after repair?

If the underlying issue is not fully resolved during the repair process, there is a possibility that the code C14A5 may reoccur. It's crucial to ensure that all related components are properly inspected and repaired to prevent reoccurrence.