C0A6A - Common Issue in 2015-2018 Ford F-150 and Other Models

Quick Answer

C0A6A means: C0A6A signifies a communication error in the adaptive cruise control system.

Fix: Check and replace faulty components Cost: $300 - $800 Time: 90-180 minutes

Can I drive with C0A6A? Immediate attention is recommended to ensure safety and functionality.

Common Questions

What does C0A6A mean and how does it affect my car?

The C0A6A code indicates a malfunction in the adaptive cruise control system. This could result in the system failing to maintain speed, which may lead to unsafe driving conditions. It's crucial to have this checked to ensure your vehicle operates correctly and safely.

What are the most common causes of C0A6A and how much does it cost to fix?

Common causes of C0A6A include a faulty adaptive cruise control module, wiring issues, or sensor malfunctions. Repair costs can range from $100 for simple wiring fixes to $800 for module replacements. Diagnosing the specific issue will help determine the actual cost.

Can I drive my car with C0A6A or should I stop immediately?

While it's possible to drive with the C0A6A code, it's not advisable. The malfunction can lead to unpredictable cruise control behavior, which could pose safety risks. It's best to have your vehicle inspected as soon as you notice this code.

How can I diagnose C0A6A myself using GeekOBD APP?

To diagnose C0A6A yourself, connect the GeekOBD APP to your vehicle's OBD2 port. Run a full system scan to retrieve codes and check for any related freeze frame data that can provide context for the error. This information will help you understand the issue better.

What vehicles are most commonly affected by C0A6A?

C0A6A is commonly found in 2015-2018 Ford F-150 models, but it can also appear in other vehicles equipped with adaptive cruise control systems. Always check for any recalls or technical service bulletins related to your specific make and model.

How can I prevent C0A6A from happening again?

To prevent C0A6A, regularly inspect and maintain your vehicle's wiring and connectors. Keeping the adaptive cruise control system clean and ensuring that software updates are performed can also mitigate potential issues.

What is C0A6A?

The diagnostic trouble code (DTC) C0A6A indicates a communication issue related to the vehicle's adaptive cruise control system. This code is particularly prevalent in 2015-2018 Ford F-150 models, but can also appear in other vehicles equipped with similar systems. When the C0A6A code is triggered, it typically means that the vehicle's onboard computer has detected an error in the signals being sent or received by the adaptive cruise control module. This can lead to various issues, such as the cruise control not functioning as intended, which could pose safety risks if the driver is relying on it. In everyday driving scenarios, you might notice that your car's cruise control either disengages unexpectedly or fails to activate altogether. It’s crucial to address this code promptly, as ignoring it can lead to further complications, including possible damage to the vehicle's control systems or sensors. If you see this code, it's a good idea to have your vehicle diagnosed as soon as possible to ensure safe operation.

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

Symptoms

Common symptoms when C0A6A is present:

  • The cruise control system fails to engage, leaving the driver without the ability to maintain a steady speed.
  • The check engine light may illuminate, indicating a broader issue with the vehicle's electronic systems.
  • Intermittent loss of cruise control functionality, which may occur sporadically during highway driving.
  • Unexpected disengagement of cruise control while driving, posing a potential safety hazard.
  • Increased fuel consumption due to manual speed regulation if the cruise control is inoperative.

Possible Causes

Most common causes of C0A6A (ordered by frequency):

  1. A faulty adaptive cruise control module (60% likelihood) is often the primary cause of the C0A6A code, leading to communication failures.
  2. Wiring issues such as damaged cables or poor connections (25% likelihood) can disrupt the signals between the cruise control components.
  3. Sensor malfunctions, particularly in the radar or camera systems that support adaptive cruise control (10% likelihood), can trigger this code.
  4. Less common but serious cause could be software glitches in the vehicle's control module, requiring updates or reprogramming.
  5. Rarely, issues with the vehicle's main body control module (BCM) can also lead to C0A6A, necessitating extensive diagnostics to identify.

C0A6A Repair Costs

Cost Breakdown by Repair Type

Adaptive Cruise Control Module Replacement

Replacing the faulty cruise control module to restore proper functionality.

  • Total: $300 - $800
  • Success rate: 85%
Wiring Repair or Replacement

Repairing or replacing damaged wiring connections often resolves communication issues.

  • Total: $100 - $300
  • Success rate: 75%
Money-Saving Tips for C0A6A
  • 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 C0A6A Diagnosis Process

Follow these systematic steps to accurately diagnose C0A6A. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Perform an initial visual inspection to identify any obvious signs of damage or loose connections in the wiring harness related to the adaptive cruise control (5-10 minutes)

Step 1: Perform an initial visual inspection to identify any obvious signs of damage or loose connections in the wiring harness related to the adaptive cruise control (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 conduct an OBD2 scan and retrieve all codes along with freeze frame data to understand the fault context (10-15 minutes)

Step 2: Use the GeekOBD APP to conduct an OBD2 scan and retrieve all codes along with 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: Conduct component testing, especially on the cruise control module and associated sensors, using a multimeter or dedicated diagnostic tools (20-30 minutes)

Step 3: Conduct component testing, especially on the cruise control module and associated sensors, using a multimeter or dedicated diagnostic tools (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: Run a system function test to verify the operation of the adaptive cruise control system after any repairs are made, ensuring all components are communicating correctly (10-15 minutes)

Step 4: Run a system function test to verify the operation of the adaptive cruise control system after any repairs are made, ensuring all components are communicating correctly (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: Perform a road test to confirm that the repair was successful and that the cruise control functions as intended under various driving conditions (15-20 minutes)

Step 5: Perform a road test to confirm that the repair was successful and that the cruise control functions as intended under various driving conditions (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: Repair Case Study: 2016 Ford F-150 Adaptive Cruise Control Failure

Vehicle: 2016 Ford F-150, 45,000 miles

Problem: Customer reported that the adaptive cruise control would not engage and the check engine light was on.

Diagnosis: Diagnostic scan revealed C0A6A code. Visual inspection showed a damaged connector in the wiring harness.

Solution: Replaced the damaged connector and cleared the fault codes. System was tested and verified to function correctly.

Cost: $250 (including parts and labor)

Result: Customer reported that the cruise control was operating normally after the repair.

Case Study 2: Repair Case Study: 2017 Ford Explorer Cruise Control Issues

Vehicle: 2017 Ford Explorer, 30,000 miles

Problem: Customer experienced intermittent cruise control disengagement while driving.

Diagnosis: C0A6A code was present. Testing revealed a faulty adaptive cruise control module.

Solution: Replaced the adaptive cruise control module and updated the vehicle's software.

Cost: $600 (parts and labor included)

Result: Post-repair road tests confirmed that the adaptive cruise control worked flawlessly.

Diagnose C0A6A

Use GeekOBD APP for professional diagnosis!

  • Real-time data monitoring
  • Advanced diagnostic features
  • Step-by-step repair guidance
  • Professional-grade analysis
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Code Information

Code: C0A6A
System: Chassis (ABS, Steering, Suspension)
Severity: HIGH
Category: Chassis Codes