Quick Answer
C017A means: C017A indicates a malfunction with the rear right wheel speed sensor, affecting ABS functionality.
Can I drive with C017A? Immediate attention is recommended to ensure safe braking performance.
Common Questions
What does C017A mean and how does it affect my car?
C017A indicates an issue with the rear right wheel speed sensor, which is crucial for the ABS system. If this sensor fails, your braking performance can be severely affected, especially in emergency situations. This could lead to longer stopping distances and increased risk of accidents.
What are the most common causes of C017A and how much does it cost to fix?
The most common cause is a faulty wheel speed sensor, which typically costs between $100 to $300 to replace. Other causes can include damaged wiring or a malfunctioning ABS module, with repair costs varying from $50 to over $1,200, depending on the issue.
Can I drive my car with C017A or should I stop immediately?
It's advised not to drive your vehicle if the C017A code is present, as this could lead to compromised braking performance, making it unsafe. Immediate diagnosis and repairs are recommended to ensure your safety.
How can I diagnose C017A myself using GeekOBD APP?
Using the GeekOBD APP, you can perform an OBD2 scan to read the C017A code and any accompanying codes. Follow up by checking the freeze frame data to gather context on when the code triggered, which can help in pinpointing the issue.
What vehicles are most commonly affected by C017A?
C017A is frequently seen in models like the 2014-2018 Chevrolet Silverado and GMC Sierra. It's important to keep an eye on recalls and Technical Service Bulletins (TSBs) for these models as they may address known issues related to the wheel speed sensors.
How can I prevent C017A from happening again?
Regular vehicle maintenance is essential. Check the wheel speed sensors periodically for damage and ensure that the ABS system is functioning correctly during routine service checks. Keeping the brake system clean and free from debris can also prevent premature failures.
What is C017A?
The diagnostic trouble code (DTC) C017A specifically relates to an issue with the rear right wheel speed sensor in vehicles equipped with anti-lock braking systems (ABS). This code typically indicates a malfunction or failure of the sensor that monitors the speed of the rear right wheel. When the sensor fails, the ABS module cannot correctly assess the wheel's speed, leading to impaired braking performance, particularly under hard braking conditions. Drivers may notice that the ABS warning light illuminates on the dashboard, and the vehicle may experience issues such as erratic braking or a longer stopping distance. Commonly affected vehicles include models from Chevrolet and GMC, particularly those manufactured between 2014 and 2018, such as the Chevrolet Silverado and GMC Sierra. Addressing the C017A code is crucial not only for maintaining optimal vehicle performance but also for ensuring safety on the road. Ignoring this code can lead to further complications, including complete ABS failure, which could render the vehicle unsafe to drive. Therefore, it's important to diagnose and repair the issue promptly, ensuring that the braking system functions correctly and efficiently.
System: C - Chassis (ABS, Steering, Suspension)
Symptoms
Common symptoms when C017A is present:
- The ABS warning light on the dashboard stays illuminated, indicating a problem with the ABS system.
- Drivers may notice unusual braking behavior, such as the brakes feeling soft or unresponsive during sudden stops.
- A decrease in overall vehicle stability, especially when braking on slippery or uneven surfaces, making it challenging to maintain control.
- Increased stopping distances may be experienced, particularly noticeable during emergency braking situations.
- Potential activation of the traction control warning light, suggesting issues with wheel speed data affecting traction management.
Possible Causes
Most common causes of C017A (ordered by frequency):
- The most common cause is a faulty rear right wheel speed sensor, which has a likelihood of about 70%. This sensor may suffer from wear, corrosion, or damage from road debris.
- Another possible cause is damaged wiring or connectors associated with the sensor, which can lead to interruptions in signal transmission. This issue occurs in about 20% of cases.
- A malfunctioning ABS control module may also trigger the C017A code, though this is less common. Preventive maintenance of the braking system can help avoid this issue.
- Less frequently, the problem could stem from a damaged wheel bearing that affects the sensor's operation. This can be serious if not addressed promptly.
- A rare cause could be software glitches within the vehicle's onboard computer system, which may require an update or reprogramming by a professional.
C017A Repair Costs
Cost Breakdown by Repair Type
Wheel Speed Sensor Replacement
Replacing the faulty rear right wheel speed sensor, which is often the primary issue.
- Total: $100 - $300
- Success rate: 85%
Wiring Repair
Repairing or replacing damaged wiring or connectors related to the sensor.
- Total: $50 - $150
- Success rate: 90%
ABS Module Repair/Replacement
In rare cases where the ABS module is faulty, it may need repair or replacement.
- Total: $400 - $1,200
- Success rate: 75%
Money-Saving Tips for C017A
- 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 C017A Diagnosis Process
Follow these systematic steps to accurately diagnose C017A. 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 around the rear right wheel sensor (5-10 minutes)
Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion around the rear right wheel sensor (5-10 minutes).
Step 2: Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context
Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context. This may provide insights into other potential issues (10-15 minutes).
Step 3: Step 3: Component testing - Use a multimeter to measure the sensor's voltage and resistance, or test the sensor's signal output while the wheel is spinning (20-30 minutes)
Step 3: Component testing - Use a multimeter to measure the sensor's voltage and resistance, or test the sensor's signal output while the wheel is spinning (20-30 minutes).
Step 4: Step 4: System function test - After repairs, verify the proper operation of the ABS system and clear codes using the GeekOBD APP to confirm the fix (10-15 minutes)
Step 4: System function test - After repairs, verify the proper operation of the ABS system and clear codes using the GeekOBD APP to confirm the fix (10-15 minutes).
Step 5: Step 5: Road test verification - Drive the vehicle under various conditions to confirm that the ABS operates correctly without triggering the C017A code again (15-20 minutes)
Step 5: Road test verification - Drive the vehicle under various conditions to confirm that the ABS operates correctly without triggering the C017A code again (15-20 minutes).
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: Chevrolet Silverado 2017 C017A Code Resolution
Vehicle: 2017 Chevrolet Silverado 1500, 75,000 miles
Problem: Customer reported the ABS warning light illuminated and experienced soft brakes.
Diagnosis: Using the GeekOBD APP, the technician retrieved the C017A code and performed a visual inspection of the rear right wheel speed sensor, finding corrosion on the connector.
Solution: Replaced the rear right wheel speed sensor and cleaned the connector, ensuring a solid electrical connection.
Cost: $250 (sensor $150, labor $100)
Result: Upon completion, the ABS warning light was cleared, and a road test confirmed proper braking function.
Case Study 2: GMC Sierra 2015 C017A Code Fix
Vehicle: 2015 GMC Sierra 2500HD, 90,000 miles
Problem: Customer complained of erratic braking and ABS light on.
Diagnosis: The technician utilized the GeekOBD APP to scan for codes and found C017A. Further inspection revealed damaged wiring to the wheel speed sensor.
Solution: Repaired the damaged wiring and replaced the wheel speed sensor.
Cost: $300 (sensor $200, wiring repair $100)
Result: The ABS system was restored to full functionality, and the customer reported improved braking performance.