Quick Answer
C0679 means: C0679 indicates an abnormal signal from the steering angle sensor, affecting vehicle stability.
Can I drive with C0679? Immediate attention is recommended to prevent safety issues.
Common Questions
What does C0679 mean and how does it affect my car?
The C0679 code signifies an issue with your steering angle sensor, affecting your vehicle's stability control. If unresolved, it can lead to poor handling and increased risk during driving, especially in adverse conditions.
What are the most common causes of C0679 and how much does it cost to fix?
The leading cause of C0679 is a worn steering angle sensor, which can cost between $150 and $300 to replace. Other causes include faulty wiring or calibration issues, which may have varying repair costs depending on the extent of the damage.
Can I drive my car with C0679 or should I stop immediately?
While you may drive short distances, it is not advisable to ignore the C0679 code. The safety features of your vehicle are compromised, so it’s best to address the issue as soon as possible to avoid any dangerous situations.
How can I diagnose C0679 myself using GeekOBD APP?
To diagnose C0679 using the GeekOBD APP, start by connecting the app to your vehicle's OBD2 port. Run a full scan to retrieve the error codes and review freeze frame data for insights into when the issue occurs, which helps pinpoint the problem.
What vehicles are most commonly affected by C0679?
Vehicles like the 2010-2015 Chevrolet Equinox and GMC Terrain are frequently affected by the C0679 code. Owners should keep an eye on steering performance and have their vehicles checked if they notice any unusual behavior.
How can I prevent C0679 from happening again?
Regular maintenance, including checking the steering system for wear and tear, ensuring proper alignment, and keeping electrical connections clean can help prevent the occurrence of C0679.
What is C0679?
Diagnostic Trouble Code (DTC) C0679 indicates an abnormal signal from the steering angle sensor, which is crucial for your vehicle's stability and traction control systems. When the steering angle sensor detects that the steering wheel is turned but the actual vehicle movement does not match the expected behavior, it triggers this code. This discrepancy can lead to improper functioning of safety features like Electronic Stability Control (ESC) and Traction Control System (TCS). If left unaddressed, it can compromise vehicle safety, leading to unpredictable handling, especially in slippery conditions. This code is often associated with vehicles like the Chevrolet Equinox, GMC Terrain, and other models using similar systems from the same production years. Drivers may notice symptoms such as the 'Check Engine' light illuminating, or erratic steering behavior. The implications of driving with this code can be serious, as it indicates a potential failure in systems designed to help maintain vehicle stability. Therefore, understanding C0679 is crucial for safe driving and ensuring your vehicle operates correctly.
System: C - Chassis (ABS, Steering, Suspension)
Symptoms
Common symptoms when C0679 is present:
- The 'Check Engine' light activates and stays illuminated, indicating a fault in the steering sensor system.
- Steering feels loose or unresponsive, resulting in inconsistent handling and driver discomfort.
- Vehicle traction control system may engage unexpectedly, causing a loss of power during acceleration in slippery conditions.
- Increased tire wear may occur due to improper alignment caused by sensor issues.
- Potential for reduced fuel efficiency as the vehicle struggles to maintain optimal performance.
Possible Causes
Most common causes of C0679 (ordered by frequency):
- Worn out or damaged steering angle sensor, with about 60% likelihood. This can happen due to age, wear, or exposure to harsh conditions.
- Faulty wiring harness or electrical connectors, which may have a 25% chance of being the issue. Corrosion or loose connections can disrupt the signals.
- Calibration issues resulting from prior repairs or modifications, with a 10% possibility. Ensuring sensors are calibrated post-repair is crucial.
- Less common cause includes a malfunctioning Electronic Control Unit (ECU), which can lead to a significant miscommunication within the vehicle's systems.
- Rarely, software glitches in the vehicle's onboard computer could trigger this code, necessitating a software update or reprogramming.
C0679 Repair Costs
Cost Breakdown by Repair Type
Steering Angle Sensor Replacement
Replacement of the faulty steering angle sensor, including labor and part costs.
- Total: $150 - $300
- Success rate: 85%
Wiring Repair
Repair of damaged wiring or connectors that may cause signal loss.
- Total: $50 - $150
- Success rate: 80%
ECU Reprogramming
Reprogramming the vehicle's ECU to ensure correct sensor calibration.
- Total: $100 - $200
- Success rate: 90%
Money-Saving Tips for C0679
- 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 C0679 Diagnosis Process
Follow these systematic steps to accurately diagnose C0679. Each step builds on the previous one to ensure accurate diagnosis.
Step 1: Step 1: Perform an initial visual inspection for damaged wiring, loose connections, or corrosion, which should take about 5-10 minutes
Step 1: Perform an initial visual inspection for damaged wiring, loose connections, or corrosion, which should take about 5-10 minutes.
Step 2: Step 2: Use the GeekOBD APP to conduct an OBD2 scan, retrieving all codes and freeze frame data to understand the context of the fault (10-15 minutes)
Step 2: Use the GeekOBD APP to conduct an OBD2 scan, retrieving all codes and freeze frame data to understand the context of the fault (10-15 minutes).
Step 3: Step 3: Conduct component testing on the steering angle sensor using a multimeter or specialized diagnostic tools (20-30 minutes)
Step 3: Conduct component testing on the steering angle sensor using a multimeter or specialized diagnostic tools (20-30 minutes).
Step 4: Step 4: After repairs, perform a system function test to verify proper operation and clear any codes (10-15 minutes)
Step 4: After repairs, perform a system function test to verify proper operation and clear any codes (10-15 minutes).
Step 5: Step 5: Complete a road test under various driving conditions to confirm repair effectiveness (15-20 minutes)
Step 5: Complete a road test under various driving conditions to confirm repair effectiveness (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: Steering Angle Sensor Replacement on 2012 Chevrolet Equinox
Vehicle: 2012 Chevrolet Equinox, 75,000 miles
Problem: Customer reported 'Check Engine' light and erratic steering behavior.
Diagnosis: After running a diagnostic scan with GeekOBD APP, C0679 was confirmed, indicating a problem with the steering angle sensor.
Solution: Replaced the steering angle sensor and recalibrated the system.
Cost: $250 (parts: $175, labor: $75)
Result: Customer reported improved steering response and the 'Check Engine' light was cleared.
Case Study 2: Wiring Repair on 2013 GMC Terrain
Vehicle: 2013 GMC Terrain, 60,000 miles
Problem: The vehicle experienced stability control issues and the 'Check Engine' light was on.
Diagnosis: C0679 was indicated. A visual inspection revealed corroded wiring in the steering column.
Solution: Repaired and replaced damaged wiring to restore signal integrity.
Cost: $100 (parts: $20, labor: $80)
Result: After repairs, the stability control system functioned correctly, and the code did not reappear.