C086A - Understanding DTC C086A: Common in 2016-2020 Ford Explorer and Other Models

Quick Answer

C086A means: DTC C086A indicates a fault in the steering angle sensor circuit.

Fix: Check and replace faulty components Cost: $150 - $300 Time: 90-180 minutes

Can I drive with C086A? Immediate attention is recommended to ensure vehicle safety.

Common Questions

What does C086A mean and how does it affect my car?

DTC C086A indicates that there is a problem with the steering angle sensor circuit. This sensor is essential for your vehicle's stability control system, helping it understand how much you are turning the steering wheel. If this sensor fails, it can lead to issues with handling and steering response, making your vehicle less safe to drive, especially in challenging road conditions.

What are the most common causes of C086A and how much does it cost to fix?

The most common cause of C086A is a faulty steering angle sensor, which might cost around $150 to $300 to replace. Other causes include damaged wiring or poor connections that could cost $100 to $200 to repair. If the electronic stability control module is involved, reprogramming might be necessary, costing about $75 to $150.

Can I drive my car with C086A or should I stop immediately?

It is advisable to avoid driving your vehicle with C086A present. The code indicates potential issues with your steering and stability control, which can significantly compromise your safety. If you notice any symptoms like unresponsive steering or warning lights, it’s best to get your vehicle checked immediately.

How can I diagnose C086A myself using GeekOBD APP?

Using the GeekOBD APP, you can start by scanning your vehicle's OBD2 system to retrieve the C086A code. The APP will provide freeze frame data that shows conditions when the code was triggered. Next, you can test the steering angle sensor's output using the APP's live data feature to check for proper signal readings.

What vehicles are most commonly affected by C086A?

DTC C086A is frequently seen in 2016-2020 Ford Explorer models but can also affect similar vehicles from other manufacturers, including certain models from Honda and Chevrolet. It’s advisable to check for any recalls or technical service bulletins (TSBs) related to steering issues for your specific make and model.

How can I prevent C086A from happening again?

Regular maintenance is key to preventing C086A. Ensure that your vehicle’s steering system is inspected during routine service checks, particularly after any suspension work or wheel alignments. Keeping your wiring and connections clean and free from corrosion will also help prevent this code from appearing.

What is C086A?

DTC C086A is a diagnostic trouble code that indicates a problem with the vehicle's steering angle sensor circuit. This code is often triggered when the sensor, which is vital for stability control and traction management systems, detects an abnormal voltage or signal. In simpler terms, this code can lead to issues with your vehicle's handling, as the steering angle sensor helps your car understand how far you're turning the steering wheel. If this sensor is malfunctioning, it can result in the car not knowing its exact steering position, which may lead to erratic handling or even difficulty in steering. It's essential to address this issue promptly, as it can compromise vehicle safety and stability, particularly during adverse weather conditions or emergencies. Car owners may experience a range of symptoms indicating this code, including the activation of the stability control light on the dashboard and a noticeable change in steering response. Ignoring this code can also lead to further damage to the vehicle's steering system, making timely diagnosis and repair crucial for maintaining the reliability of your Ford Explorer or other affected models.

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

Symptoms

Common symptoms when C086A is present:

  • The stability control warning light illuminates on the dashboard, indicating a potential loss of control.
  • Steering feels loose or unresponsive, particularly during turns, making it difficult to maintain control.
  • Unexpected changes in handling characteristics, such as the vehicle drifting or veering off course.
  • Increased effort needed to turn the steering wheel, indicating the steering system may not be functioning correctly.
  • Unusual noises coming from the steering column, which may suggest a mechanical issue with the steering components.

Possible Causes

Most common causes of C086A (ordered by frequency):

  1. The most common cause of DTC C086A is a faulty steering angle sensor, with a likelihood of around 60%. This sensor may fail due to wear and tear or electrical issues.
  2. Another common cause is damaged wiring or poor connections within the steering angle sensor circuit, estimated at 25% likelihood. Corrosion or fraying can lead to signal disruptions.
  3. Improper calibration of the steering angle sensor after wheel alignment or suspension repairs can trigger this code, with a chance of around 10%. Regular service checks can prevent this issue.
  4. A less common but serious cause could be issues with the vehicle's electronic stability control (ESC) module, affecting multiple systems if not addressed.
  5. In rare cases, software glitches in the vehicle's onboard computer can lead to false readings, which might confuse the sensors and throw this code.

C086A Repair Costs

Cost Breakdown by Repair Type

Steering Angle Sensor Replacement

Replacing the faulty steering angle sensor will resolve the C086A code and restore proper functionality.

  • Total: $150 - $300
  • Success rate: 95%
Wiring Repair

Repairing damaged wiring or connectors in the steering angle sensor circuit.

  • Total: $100 - $200
  • Success rate: 90%
ESC Module Reprogramming

Reprogramming or updating the electronic stability control module if software issues are identified.

  • Total: $75 - $150
  • Success rate: 80%
Money-Saving Tips for C086A
  • 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 C086A Diagnosis Process

Follow these systematic steps to accurately diagnose C086A. 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 in the steering angle sensor circuit (5-10 minutes)

Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion in the steering angle sensor circuit (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, helping to identify if C086A is the only issue (10-15 minutes)

Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context, helping to identify if C086A is the only issue (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 to measure voltage output from the steering angle sensor, ensuring it meets manufacturer specifications (20-30 minutes)

Step 3: Component testing - Use a multimeter to measure voltage output from the steering angle sensor, ensuring it meets manufacturer specifications (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 of the steering angle sensor by turning the steering wheel and checking the corresponding readings in the GeekOBD APP (10-15 minutes)

Step 4: System function test - Verify proper operation of the steering angle sensor by turning the steering wheel and checking the corresponding readings in the GeekOBD APP (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 that the stability control system is functioning correctly (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and ensure that the stability control 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: Steering Angle Sensor Replacement on 2018 Ford Explorer

Vehicle: 2018 Ford Explorer, 45,000 miles

Problem: Customer reported that the stability control warning light was on and experienced difficulty steering.

Diagnosis: After conducting a visual inspection and using the GeekOBD APP, we confirmed the C086A code was present. The steering angle sensor was found to be faulty.

Solution: Replaced the steering angle sensor and recalibrated the system.

Cost: $250 (sensor: $200, labor: $50)

Result: The repair was successful; the stability control light was cleared, and the steering response returned to normal.

Case Study 2: Wiring Repair for 2017 Honda CR-V

Vehicle: 2017 Honda CR-V, 30,000 miles

Problem: Driver experienced intermittent steering issues and noticed the stability control light flickering.

Diagnosis: Diagnosis revealed a C086A code due to damaged wiring in the steering angle sensor circuit.

Solution: Repaired the damaged wiring and ensured all connections were secure.

Cost: $150 (labor: $100, parts: $50 for connectors)

Result: The issue was resolved, and the customer reported no further problems with the steering system.

Diagnose C086A

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: C086A
System: Chassis (ABS, Steering, Suspension)
Severity: HIGH
Category: Chassis Codes