C0AAB - Understanding the Diagnostic Trouble Code for 2016-2021 Ford Explorer and Other Models

Quick Answer

C0AAB means: DTC C0AAB indicates a malfunction in the advanced driver assistance system, often related to sensor errors.

Fix: Check and replace faulty components Cost: $150 - $600 Time: 90-180 minutes

Can I drive with C0AAB? Address the issue as soon as possible to ensure safety features function properly.

Common Questions

What does C0AAB mean and how does it affect my car?

DTC C0AAB indicates a malfunction in the advanced driver assistance system, which could affect features like adaptive cruise control and lane-keeping assistance. Ignoring this code may lead to decreased vehicle safety and performance.

What are the most common causes of C0AAB and how much does it cost to fix?

Common causes include faulty sensors, software glitches, and wiring issues. Repair costs can range from $50 for a software update to $600 for sensor replacement.

Can I drive my car with C0AAB or should I stop immediately?

While you can drive with C0AAB, it is not recommended as it compromises the functionality of safety features. It's best to address the issue promptly to avoid potential hazards.

How can I diagnose C0AAB myself using GeekOBD APP?

Using the GeekOBD APP, you can perform a complete scan of your vehicle to retrieve the C0AAB code and additional codes, view freeze frame data, and monitor live sensor readings for further insights.

What vehicles are most commonly affected by C0AAB?

The C0AAB code is most commonly seen in 2016-2021 Ford Explorer models and other late-model Ford vehicles equipped with advanced driver assistance systems.

How can I prevent C0AAB from happening again?

Regular maintenance checks, keeping the vehicle's software updated, and promptly addressing any warning lights can help prevent the recurrence of the C0AAB code.

What is C0AAB?

The DTC code C0AAB is a diagnostic trouble code that signifies an issue with the vehicle's advanced driver assistance system (ADAS), specifically relating to sensor communication or functionality. This code is predominantly found in late-model Ford vehicles, particularly the 2016-2021 Ford Explorer. What this means is that the vehicle has detected a malfunction in one of its critical safety components that are designed to assist the driver. This could include problems with radar, cameras, or other sensors that help with functions like adaptive cruise control, lane-keeping, or collision avoidance. If this code appears, it can lead to the disabling of these safety features, which not only affects vehicle performance but can also pose a risk to safety if the driver becomes dependent on these systems. In practical terms, ignoring this code may lead to more serious faults in the ADAS, potentially resulting in costly repairs down the line. Therefore, understanding what this code means and acting on it promptly is essential for maintaining both vehicle performance and safety.

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

Symptoms

Common symptoms when C0AAB is present:

  • The check engine light illuminates and remains on, indicating a persistent issue with the ADAS.
  • Adaptive cruise control may stop functioning, leading to potential safety risks during highway driving.
  • The lane-keeping assistance feature may become erratic or fail to activate, resulting in increased difficulty in maintaining lane discipline.
  • Drivers may experience warning messages on the dashboard related to the ADAS, highlighting system failures.
  • Reduced fuel efficiency can occur as the vehicle compensates for sensor malfunctions.

Possible Causes

Most common causes of C0AAB (ordered by frequency):

  1. The most common cause (60% likelihood) is a faulty sensor or wiring issue, often due to age or wear and tear.
  2. Second, a software glitch or outdated firmware can interfere with sensor functionality, which might require a simple update.
  3. Another cause (20% likelihood) could be physical damage to sensors from road debris or accidents.
  4. A less common but serious issue may involve internal computer failures, which could necessitate replacement or reprogramming.
  5. In rare cases, problems with the vehicle's electrical system can lead to intermittent issues that might trigger the C0AAB code.

C0AAB Repair Costs

Cost Breakdown by Repair Type

Sensor Replacement

Replacing a faulty sensor in the ADAS, which is often the root cause of the C0AAB code.

  • Total: $150 - $600
  • Success rate: 85%
Software Update

Updating the vehicle's software to fix glitches that may cause the C0AAB code.

  • Total: $50 - $150
  • Success rate: 70%
Wiring Repair

Repairing damaged wiring that affects sensor communication.

  • Total: $100 - $300
  • Success rate: 90%
Money-Saving Tips for C0AAB
  • 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 C0AAB Diagnosis Process

Follow these systematic steps to accurately diagnose C0AAB. 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 (20-30 minutes)

Step 3: Component testing - Use a multimeter or specific diagnostic tools to test suspected components (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 (10-15 minutes)

Step 4: System function test - Verify proper operation after repairs and clear codes (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 (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success (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: Ford Explorer ADAS Sensor Replacement

Vehicle: 2020 Ford Explorer, 45,000 miles

Problem: Customer reported that the adaptive cruise control was not functioning.

Diagnosis: Diagnostic scan revealed the C0AAB code. Visual inspection showed a damaged sensor.

Solution: Replaced the front radar sensor and re-calibrated the system.

Cost: $400 (sensor $300, labor $100)

Result: The adaptive cruise control function was restored, and the C0AAB code was cleared.

Case Study 2: Software Glitch in 2017 Ford Fusion

Vehicle: 2017 Ford Fusion, 60,000 miles

Problem: Customer experienced intermittent lane-keeping assist failures.

Diagnosis: C0AAB code was present; a software update was indicated.

Solution: Performed a software update through the dealership.

Cost: $100 (all labor)

Result: Lane-keeping assist was restored, and the customer reported no further issues.

Diagnose C0AAB

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: C0AAB
System: Chassis (ABS, Steering, Suspension)
Severity: HIGH
Category: Chassis Codes