C05FA - Understanding C05FA Code: Common in 2015-2020 Ford Explorer and Other Models

Quick Answer

C05FA means: C05FA indicates a malfunction in the power steering system, specifically the steering assist motor.

Fix: Check and replace faulty components Cost: $300 - $600 Time: 90-180 minutes

Can I drive with C05FA? Immediate attention is recommended to ensure safe vehicle operation.

Common Questions

What does C05FA mean and how does it affect my car?

The C05FA code signifies a problem with your vehicle's power steering assist motor. This can lead to difficulty steering, especially in tight spaces, and can increase fatigue while driving. If not addressed, it could worsen over time, potentially leading to a complete loss of power steering assist.

What are the most common causes of C05FA and how much does it cost to fix?

Common causes of C05FA include a faulty power steering assist motor (cost $300-$600) or a malfunctioning control module (cost $200-$400). Regular vehicle inspections can help catch these issues early, saving you time and money.

Can I drive my car with C05FA or should I stop immediately?

Driving with the C05FA code is risky. You may experience difficulty steering, which can lead to unsafe driving conditions. It is advisable to stop driving and seek professional assistance as soon as possible.

How can I diagnose C05FA myself using GeekOBD APP?

To diagnose C05FA with the GeekOBD APP, connect the app to your vehicle’s OBD2 port. Perform a scan to retrieve the DTCs and assess the freeze frame data. This will give you an idea of when the issue occurred and any other related codes that may be present.

What vehicles are most commonly affected by C05FA?

The C05FA code is frequently reported in the 2015-2020 Ford Explorer, but it can also appear in other Ford models. Be sure to check for any recalls or Technical Service Bulletins (TSBs) related to your vehicle.

How can I prevent C05FA from happening again?

To prevent the C05FA code from reappearing, ensure regular maintenance of your power steering system, including checking fluid levels and inspecting wiring for wear and corrosion.

What is C05FA?

The diagnostic trouble code (DTC) C05FA indicates an issue with the vehicle's power steering system, specifically relating to the steering assist motor. This code is often triggered when the power steering control module detects that the steering assist motor is not functioning properly. When this happens, you may experience difficulty in steering, especially at low speeds. This can be particularly concerning for drivers who need to maneuver in tight spaces or during parking. The power steering system is crucial for vehicle control, and a malfunction can lead to increased driver fatigue and safety risks. Moreover, if left unaddressed, it may cause further complications, such as damage to other steering components. As a car owner, it's essential to understand that this code can manifest in various ways, and timely diagnostics are key to ensuring safe vehicle operation. Affected vehicles, such as the 2015-2020 Ford Explorer, may display issues like inconsistent steering response or a complete loss of power steering assist. If you encounter this code, it's advisable to seek immediate attention to prevent further complications.

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

Symptoms

Common symptoms when C05FA is present:

  • The check engine light may illuminate or stay on constantly, indicating a fault in the power steering system.
  • Drivers may experience difficulty steering, particularly at low speeds, making it hard to navigate tight spaces.
  • Fuel economy can decrease by 10-15% due to the increased effort required to steer the vehicle.
  • Unusual noises, such as whining or grinding, may occur when turning the steering wheel.
  • You may notice intermittent power steering assist, where the steering feels normal at times and excessively heavy at others.

Possible Causes

Most common causes of C05FA (ordered by frequency):

  1. The most common cause of the C05FA code is a faulty power steering assist motor, which has a likelihood of 60%. This motor can wear out or fail due to electrical issues.
  2. Another common cause is a malfunctioning power steering control module, which can lead to a communication breakdown between components.
  3. Wiring issues, such as frayed or corroded wires in the power steering system, can also contribute to this code; regular inspections can help prevent this.
  4. Less common but serious causes include low power steering fluid levels, which can cause overheating and damage to the assist motor.
  5. In rare cases, the steering column itself may have mechanical issues that affect the power steering operation.

C05FA Repair Costs

Cost Breakdown by Repair Type

Power Steering Assist Motor Replacement

Replacing the faulty power steering assist motor to restore proper functionality.

  • Total: $300 - $600
  • Success rate: 80%
Power Steering Control Module Repair

Repairing or reprogramming the power steering control module to resolve communication issues.

  • Total: $200 - $400
  • Success rate: 70%
Money-Saving Tips for C05FA
  • 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 C05FA Diagnosis Process

Follow these systematic steps to accurately diagnose C05FA. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Perform an initial visual inspection to check for damaged wiring, loose connections, or corrosion in the power steering system (5-10 minutes)

Step 1: Perform an initial visual inspection to check for damaged wiring, loose connections, or corrosion in the power steering system (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: Use the GeekOBD APP to execute an OBD2 scan to retrieve all codes and freeze frame data, providing context for the fault (10-15 minutes)

Step 2: Use the GeekOBD APP to execute an OBD2 scan to retrieve all codes and freeze frame data, providing context for the fault (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: Conduct component testing using a multimeter to test the power steering assist motor and control module (20-30 minutes)

Step 3: Conduct component testing using a multimeter to test the power steering assist motor and control module (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: After repairs, perform a system function test to verify the proper operation and clear any codes from the system (10-15 minutes)

Step 4: After repairs, perform a system function test to verify the proper operation and clear any codes from the system (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: Conduct a road test under various conditions to confirm the repair was successful and the steering assist is functioning correctly (15-20 minutes)

Step 5: Conduct a road test under various conditions to confirm the repair was successful and the steering assist 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: Power Steering Motor Replacement on 2017 Ford Explorer

Vehicle: 2017 Ford Explorer, Mileage: 75,000

Problem: Customer reported difficulty steering and intermittent power assist failures.

Diagnosis: After scanning the vehicle, C05FA was identified. A visual inspection revealed corrosion in the wiring harness and a faulty power steering assist motor.

Solution: Replaced the power steering assist motor and repaired the wiring harness.

Cost: $450 (parts: $300 for motor, $150 for labor)

Result: Customer reported improved steering feel and no further issues post-repair.

Case Study 2: Control Module Repair on 2016 Ford Fusion

Vehicle: 2016 Ford Fusion, Mileage: 60,000

Problem: Steering assist was erratic, with the check engine light illuminated.

Diagnosis: C05FA was retrieved; testing indicated a fault in the power steering control module.

Solution: Reprogrammed the control module and cleared the code.

Cost: $250 (parts: $100 for reprogramming, $150 for labor)

Result: Steering assist restored to normal operation, with no further codes present.

Diagnose C05FA

Use GeekOBD APP for professional diagnosis!

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  • Step-by-step repair guidance
  • Professional-grade analysis
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Code Information

Code: C05FA
System: Chassis (ABS, Steering, Suspension)
Severity: HIGH
Category: Chassis Codes