C0404 - Understanding DTC C0404: Common Issues in 2010-2018 Ford Fusion and Other Models

Quick Answer

C0404 means: C0404 indicates a fault in the ABS control module, affecting brake performance.

Fix: Check and replace faulty components Cost: $400 - $800 Time: 90-180 minutes

Can I drive with C0404? Immediate attention is recommended to ensure vehicle safety.

Common Questions

What does C0404 mean and how does it affect my car?

The C0404 code indicates a malfunction in your vehicle's ABS control module, which is vital for safe braking. If this code appears, it can lead to issues like reduced braking efficiency and increased stopping distances, especially under difficult driving conditions. Addressing this issue promptly can prevent potential accidents.

What are the most common causes of C0404 and how much does it cost to fix?

Common causes of the C0404 code include a faulty ABS control module (60% likelihood) and damaged wiring (20% likelihood). Repair costs can range from $100 for wiring repairs to $800 for replacing the ABS module, depending on the specific issue.

Can I drive my car with C0404 or should I stop immediately?

It's not safe to drive your vehicle with the C0404 code active, as it affects the ABS system. You should address the issue immediately to ensure proper brake function and prevent accidents.

How can I diagnose C0404 myself using GeekOBD APP?

To diagnose the C0404 code using the GeekOBD APP, start by connecting the app to your vehicle's OBD2 port. Then, run a full scan to retrieve the C0404 code along with any other related codes. Review the freeze frame data for context about when the issue occurred, and follow up with visual inspections of the ABS module and wiring.

What vehicles are most commonly affected by C0404?

The C0404 code is frequently seen in Ford models, including the 2010-2018 Ford Fusion, Escape, and Explorer. These models have known issues with ABS modules, and there may be recalls or Technical Service Bulletins (TSBs) related to this code.

How can I prevent C0404 from happening again?

To prevent the C0404 code, ensure regular maintenance of your vehicle's braking system, including checking for corrosion on electrical connectors and keeping the ABS module protected from moisture. Regularly inspect wiring for wear and damage, and consider updating your vehicle's software if applicable.

What is C0404?

DTC C0404 is a diagnostic trouble code that indicates a malfunction in the vehicle's anti-lock braking system (ABS). Specifically, this code is related to the control module for the ABS, which is responsible for maintaining optimal brake function and safety during various driving conditions. When the C0404 code is triggered, it indicates that the ABS control module has detected an issue that prevents it from communicating effectively with the vehicle's onboard systems. This can lead to a variety of problems, including reduced braking efficiency and compromised vehicle stability, especially in slippery conditions. Car owners may notice that the ABS warning light illuminates on the dashboard, and the vehicle may experience erratic braking behavior. Ignoring this code can lead to serious safety concerns, making it crucial for drivers to address the issue promptly. This code is most commonly seen in Ford vehicles like the Fusion, Escape, and Explorer, particularly models manufactured from 2010 to 2018. Addressing the C0404 code usually requires a thorough diagnostic process to pinpoint the exact cause, which can range from simple wiring issues to more complex problems with the ABS control module itself.

System: C - Chassis (ABS, Steering, Suspension)

Symptoms

Common symptoms when C0404 is present:

  • ABS warning light stays illuminated on the dashboard, indicating a failure in the anti-lock braking system.
  • Braking performance feels inconsistent, with the vehicle occasionally skidding or locking up during emergency stops.
  • Driver experiences increased stopping distances, especially in wet or icy conditions, leading to potential safety hazards.
  • Unusual noises from the braking system, such as grinding or squealing sounds when braking.
  • Vehicle stability control may be compromised, leading to unexpected movements during sharp turns or sudden stops.

Possible Causes

Most common causes of C0404 (ordered by frequency):

  1. Faulty ABS control module (60% likelihood) - This is the most common cause, where the control module fails to communicate with other systems, leading to the C0404 code.
  2. Damaged wiring or connectors (20% likelihood) - Wiring issues can lead to poor connectivity, causing the ABS module to malfunction.
  3. Faulty wheel speed sensors (10% likelihood) - These sensors provide critical data to the ABS system; if they fail, it can trigger the C0404 code.
  4. Corrosion or moisture in the ABS control module (5% likelihood) - Environmental factors can lead to corrosion, affecting module performance.
  5. Rarely, software issues within the ABS module (5% likelihood) - Outdated or corrupted software can lead to communication errors within the ABS system.

C0404 Repair Costs

Cost Breakdown by Repair Type

ABS Control Module Replacement

Replacing the faulty ABS control module to restore proper braking function.

  • Total: $400 - $800
  • Success rate: 85%
Wiring Repair

Repairing or replacing damaged wiring or connectors leading to the ABS module.

  • Total: $100 - $300
  • Success rate: 75%
Wheel Speed Sensor Replacement

Replacing faulty wheel speed sensors that may be causing communication issues.

  • Total: $150 - $300
  • Success rate: 80%
Money-Saving Tips for C0404
  • Start with the most common and least expensive repairs first
  • Use GeekOBD APP to confirm diagnosis before replacing expensive parts
  • Consider preventive maintenance to avoid future occurrences
  • Compare prices for OEM vs aftermarket parts based on your needs
  • Address the issue promptly to prevent more expensive secondary damage

Diagnostic Steps

Professional C0404 Diagnosis Process

Follow these systematic steps to accurately diagnose C0404. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion (5-10 minutes)

Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion (5-10 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 2: Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context (10-15 minutes)

Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 3: Step 3: Component testing - Use a multimeter or specific diagnostic tools to test suspected components like the ABS module and wheel speed sensors (20-30 minutes)

Step 3: Component testing - Use a multimeter or specific diagnostic tools to test suspected components like the ABS module and wheel speed sensors (20-30 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 4: Step 4: System function test - Verify proper operation after repairs and clear codes to ensure the issue is resolved (10-15 minutes)

Step 4: System function test - Verify proper operation after repairs and clear codes to ensure the issue is resolved (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 5: Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and ensure the ABS system is functioning correctly (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and ensure the ABS system is functioning correctly (15-20 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.

Important Notes

  • Always verify the repair with GeekOBD APP after completing diagnostic steps
  • Clear codes and test drive to ensure the problem is resolved
  • Address underlying causes to prevent code recurrence

Real Repair Case Studies

Case Study 1: ABS Control Module Replacement in a 2015 Ford Fusion

Vehicle: 2015 Ford Fusion, 75,000 miles

Problem: Customer reported the ABS warning light staying on and inconsistent braking performance.

Diagnosis: After scanning the vehicle with the GeekOBD APP, the C0404 code was retrieved. A visual inspection revealed corrosion on the ABS control module.

Solution: Replaced the ABS control module and performed a system function test to ensure proper operation.

Cost: $600 (including parts and labor)

Result: The ABS warning light turned off, and the braking system operated normally after the repair.

Case Study 2: Wiring Repair for a 2012 Ford Explorer

Vehicle: 2012 Ford Explorer, 90,000 miles

Problem: Driver experienced ABS light activation and reduced braking efficiency.

Diagnosis: Diagnostics revealed the C0404 code; further inspection indicated damaged wiring to the ABS module.

Solution: Repaired the damaged wiring and cleared the code using the GeekOBD APP.

Cost: $250 (including labor and materials)

Result: Braking performance improved, and the ABS light remained off after the repair.

Diagnose C0404

Use GeekOBD APP for professional diagnosis!

  • Real-time data monitoring
  • Advanced diagnostic features
  • Step-by-step repair guidance
  • Professional-grade analysis
Download GeekOBD APP Get MOBD Adapter

Code Information

Code: C0404
System: Chassis (ABS, Steering, Suspension)
Severity: HIGH
Category: Chassis Codes