AutoCodes – Generic – C1623

C1623 Code - Brake Controlled System Malfunction

Quick Answer

The All Wheel Control (AWC) ECU controls brakes for Active Center Differential (ACD) Control. Common causes include Faulty All Wheel Control (AWC) ECU, All Wheel Control (AWC) ECU harness is open or shorted, All Wheel Control (AWC) 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: C1623 indicates Brake Controlled System Malfunction.
Common causes: Common causes include Faulty All Wheel Control (AWC) ECU, All Wheel Control (AWC) ECU harness is open or shorted, All Wheel Control (AWC) 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 9,595

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 Nov 15, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1623 Description

The All Wheel Control (AWC) ECU controls brakes for Active Center Differential (ACD) Control. The code is set when the AYC brake control operates for a prolonged period.

OBDII Code C1623 - Brake Controlled System Malfunction - AutoCodes.com — C1623 Code - Brake Controlled System Malfunction

What does this mean?

What are the Possible Causes of the DTC C1623?

Faulty All Wheel Control (AWC) ECU
All Wheel Control (AWC) ECU harness is open or shorted
All Wheel Control (AWC) ECU circuit poor electrical connection

How to Fix the DTC C1623?

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 C1623 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 C1623 code?

Need more information on how to fix the C1623 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1623 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C1623 Mitsubishi — Brake Controlled System Malfunction

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 C1623 Code

1. What are the common symptoms of OBDII code C1623 (Brake Controlled System Malfunction)?

- Common symptoms include the ABS warning light illuminating on the dashboard, reduced braking performance, and potential traction control issues.

2. What are some possible causes of OBDII code C1623?

- Potential causes include faulty ABS sensors, damaged wiring or connections in the brake control system, or issues with the ABS control module.

3. How can I diagnose the Brake Controlled System Malfunction associated with code C1623?

- Diagnosis typically involves using a professional OBDII scanner to read the fault codes, conducting a visual inspection of brake system components, and performing specific tests on the ABS sensors and control module.

4. What are some basic repair tips for addressing OBDII code C1623?

- Basic repair tips may include checking and cleaning ABS sensors, inspecting wiring for damage, ensuring proper connections, and resetting the fault code after making any necessary repairs.

5. Can OBDII code C1623 be a serious safety concern?

- Yes, OBDII code C1623 indicating a Brake Controlled System Malfunction can be a serious safety concern as it may impact the vehicle's braking performance and overall stability.

6. How urgent is it to address OBDII code C1623 once it appears?

- It is important to address OBDII code C1623 promptly to ensure the proper functioning of the brake control system and maintain safe driving conditions.

7. Are there any DIY fixes for OBDII code C1623, or should I seek professional help?

- While basic checks and cleaning of ABS sensors are possible as DIY fixes, complex issues related to the ABS control module or wiring may require professional diagnosis and repair.

8. Can severe weather conditions or road debris trigger OBDII code C1623?

- Yes, extreme weather conditions or road debris causing damage to ABS sensors or wiring can potentially trigger OBDII code C1623 related to a Brake Controlled System Malfunction.

9. What role does the Brake Controlled System play in vehicle safety?

- The Brake Controlled System, including ABS and traction control, plays a crucial role in enhancing vehicle safety by preventing wheel lock-up during braking and maintaining stability in various driving conditions.

10. Is it safe to drive with OBDII code C1623 present?

- It is not recommended to drive with OBDII code C1623 present, as it indicates a malfunction in the Brake Controlled System that could compromise braking performance and overall safety.