Quick Answer
C0879 means: C0879 indicates a problem with the steering angle sensor, affecting steering performance.
Can I drive with C0879? It is advisable to address this issue immediately to prevent safety risks.
Common Questions
What does C0879 mean and how does it affect my car?
The C0879 code indicates an issue with the steering angle sensor, which is crucial for proper steering function. If this sensor fails, you may experience unresponsive steering, difficulty controlling the car, and possible safety hazards while driving.
What are the most common causes of C0879 and how much does it cost to fix?
Common causes include a faulty steering angle sensor, loose wiring, or calibration issues. Fixing these problems can range from $100 to $400 depending on the specific repair needed.
Can I drive my car with C0879 or should I stop immediately?
It's not recommended to drive with the C0879 code active, as it can lead to steering difficulties and potential safety risks. If you notice any symptoms, it’s best to have your vehicle inspected as soon as possible.
How can I diagnose C0879 myself using GeekOBD APP?
To diagnose C0879 using the GeekOBD APP, connect the device to your vehicle's OBD2 port, scan for trouble codes, and access freeze frame data. This will provide insight into when the code was triggered and what conditions were present.
What vehicles are most commonly affected by C0879?
C0879 is frequently seen in various Chevrolet and GMC models, particularly those manufactured between 2015 and 2019, including the Chevy Silverado and GMC Sierra.
How can I prevent C0879 from happening again?
Regular maintenance checks on your vehicle’s steering system, including ensuring proper calibration of the steering angle sensor, can help prevent future occurrences of this code.
What is C0879?
DTC C0879 is a diagnostic trouble code that pertains to the Steering Angle Sensor (SAS) in vehicles, particularly affecting models from Chevrolet and GMC produced between 2015 and 2019. This code indicates that the power steering system is experiencing an issue related to the steering angle sensor’s performance. The steering angle sensor plays a crucial role in ensuring that the vehicle's steering system operates optimally by providing feedback to the vehicle's onboard computer about the position of the steering wheel. When the sensor is malfunctioning, it can lead to improper steering responses, making the vehicle harder to control, especially during turns or when driving at higher speeds. In real-world terms, if you see the C0879 code, you might notice your steering feels off or that your vehicle's stability control system is less effective. Ignoring this code can lead to further complications, such as increased wear on steering components or potential safety issues while driving. Therefore, it’s essential to address it promptly to maintain driving safety and vehicle performance.
System: C - Chassis (ABS, Steering, Suspension)
Symptoms
Common symptoms when C0879 is present:
- The check engine light illuminates, indicating an issue with the steering system.
- Steering feels loose or unresponsive, especially during sharp turns, leading to potential handling issues.
- The vehicle's stability control warning light may also be triggered, indicating that electronic stability control is compromised.
- Inconsistent steering feedback, making it difficult to maintain a straight line while driving.
- Unusual noises from the steering column when turning the wheel, which could signify a mechanical issue.
Possible Causes
Most common causes of C0879 (ordered by frequency):
- The most common cause is a malfunctioning steering angle sensor, which occurs in approximately 60% of cases. This can be due to wear or internal faults.
- A second cause could be loose or damaged wiring related to the sensor. This issue can disrupt the signal sent to the vehicle's computer and occurs in around 25% of cases.
- Improperly calibrated sensors can also trigger this code, especially after a repair or replacement of steering components. Regular calibration checks can help prevent this issue.
- Less common but serious causes include issues with the power steering control module, which may require professional diagnostics and repair.
- Rarely, a faulty Electronic Control Unit (ECU) can be to blame, but this is infrequent and usually accompanied by other codes.
C0879 Repair Costs
Cost Breakdown by Repair Type
Steering Angle Sensor Replacement
Replacing the faulty steering angle sensor with an OEM part.
- Total: $200 - $400
- Success rate: 85%
Wiring Repair
Repairing or replacing damaged wiring related to the steering angle sensor.
- Total: $100 - $300
- Success rate: 75%
ECU Reprogramming
Reprogramming the Electronic Control Unit if necessary.
- Total: $150 - $300
- Success rate: 70%
Money-Saving Tips for C0879
- 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 C0879 Diagnosis Process
Follow these systematic steps to accurately diagnose C0879. Each step builds on the previous one to ensure accurate diagnosis.
Step 1: Step 1: Perform an initial visual inspection of the steering column and sensor wiring
Step 1: Perform an initial visual inspection of the steering column and sensor wiring. Look for any visible damage, frayed wires, or loose connections (5-10 minutes).
Step 2: Step 2: Use an OBD2 scanner, such as the GeekOBD APP, to read the trouble codes and freeze frame data
Step 2: Use an OBD2 scanner, such as the GeekOBD APP, to read the trouble codes and freeze frame data. This helps understand the context of the fault (10-15 minutes).
Step 3: Step 3: Conduct component testing on the steering angle sensor using a multimeter
Step 3: Conduct component testing on the steering angle sensor using a multimeter. Verify that the sensor outputs the correct voltage readings when the steering wheel is turned (20-30 minutes).
Step 4: Step 4: If repairs are made, perform a system function test to ensure everything operates as intended and clear any stored codes (10-15 minutes)
Step 4: If repairs are made, perform a system function test to ensure everything operates as intended and clear any stored codes (10-15 minutes).
Step 5: Step 5: Finally, complete a road test under various driving conditions to confirm that the problem has been resolved (15-20 minutes)
Step 5: Finally, complete a road test under various driving conditions to confirm that the problem has been resolved (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 2016 Chevrolet Silverado
Vehicle: 2016 Chevrolet Silverado, 65,000 miles
Problem: Customer reported difficulty steering and the check engine light was on.
Diagnosis: After scanning with GeekOBD APP, C0879 was identified. Visual inspection revealed a faulty sensor.
Solution: Replaced the steering angle sensor and recalibrated the system.
Cost: $350 (sensor cost $250, labor $100)
Result: Steering performance returned to normal, and the check engine light was cleared.
Case Study 2: Wiring Repair on 2018 GMC Sierra
Vehicle: 2018 GMC Sierra, 45,000 miles
Problem: Customer experienced intermittent steering issues and stability control warnings.
Diagnosis: Diagnostic scan showed C0879. Inspection revealed damaged wiring to the sensor.
Solution: Repaired the wiring harness connecting to the steering angle sensor.
Cost: $150 (labor included)
Result: Stability control warnings cleared, and steering responsiveness improved.