Quick Answer
C0958 means: C0958 indicates a malfunction with the Steering Angle Sensor, impacting vehicle stability systems.
Can I drive with C0958? Immediate attention is recommended; driving with this code can lead to safety issues.
Common Questions
What does C0958 mean and how does it affect my car?
C0958 indicates a malfunction in the Steering Angle Sensor, which is crucial for vehicle stability. If this code appears, it can lead to erratic steering, warning lights, and compromised safety. Ignoring this issue could result in more severe driving problems.
What are the most common causes of C0958 and how much does it cost to fix?
The primary cause of C0958 is typically a faulty Steering Angle Sensor, which can cost between $150 and $300 to replace. Other causes include electrical issues or misalignment, which can add to repair costs depending on the severity.
Can I drive my car with C0958 or should I stop immediately?
It is not advisable to drive your vehicle with the C0958 code present, as it can lead to unpredictable steering behavior. It's best to have the issue diagnosed and repaired immediately to ensure safety.
How can I diagnose C0958 myself using GeekOBD APP?
To diagnose C0958 with GeekOBD APP, connect the app to your OBD2 port. Use the app to scan for codes and review any freeze frame data. Check the live data for the steering angle readings to see if they align with expected values.
What vehicles are most commonly affected by C0958?
C0958 is commonly reported in the 2015-2018 Chevrolet Silverado and similar models in the GMC Sierra range. Always check for recalls or Technical Service Bulletins (TSBs) related to steering systems for specific vehicles.
How can I prevent C0958 from happening again?
To prevent C0958, ensure regular maintenance checks of the steering system, including the SAS. Keep an eye on the condition of wiring and connectors, and avoid rough driving conditions that could damage the steering components.
What is C0958?
DTC C0958 refers to a problem with the Steering Angle Sensor (SAS) in vehicles, particularly seen in models like the 2015-2018 Chevrolet Silverado. This code indicates that the sensor is not reading correctly or is malfunctioning, which can lead to various issues with vehicle stability and handling. The steering angle sensor plays a crucial role in systems such as Electronic Stability Control (ESC) and Traction Control. When it fails, the vehicle might display warning lights on the dashboard, such as the stability control or ABS light. Moreover, the vehicle’s handling can become unpredictable, potentially leading to safety concerns while driving. The SAS measures the angle of the steering wheel and sends this data to the vehicle's control module to adjust braking and power steering assist. If the SAS is faulty, you may experience symptoms like a check engine light, unresponsive steering, or erratic vehicle behavior. It is essential to address this issue promptly to ensure your vehicle operates safely and efficiently.
System: C - Chassis (ABS, Steering, Suspension)
Symptoms
Common symptoms when C0958 is present:
- Check engine light remains illuminated on the dashboard, indicating a system fault.
- Unresponsive or inconsistent steering behavior, making it difficult to control the vehicle smoothly.
- Increased difficulty during sharp turns or lane changes, often feeling like the vehicle is not responding as expected.
- Warning lights for Stability Control or ABS may activate, alerting the driver to potential issues.
- Reduced traction control effectiveness, especially in slippery conditions, which can increase the risk of skidding.
Possible Causes
Most common causes of C0958 (ordered by frequency):
- The most common cause of C0958 is a faulty Steering Angle Sensor, which accounts for about 70% of cases. This sensor may wear out or become damaged due to environmental factors or improper installation.
- Another cause could be misalignment of the steering system, which can lead to incorrect readings from the SAS. Regular maintenance and checks can help prevent this.
- Electrical issues, such as damaged wiring or poor connections, can also trigger this code, leading to intermittent sensor failures.
- Less common but serious causes include problems with the Vehicle Control Module (VCM), which may require replacement if it fails to communicate with the SAS properly.
- A rare but possible cause could be software issues within the vehicle's onboard computer systems, necessitating a software update or reprogramming.
C0958 Repair Costs
Cost Breakdown by Repair Type
Steering Angle Sensor Replacement
Replacing the faulty Steering Angle Sensor with a new OEM part.
- Total: $150 - $300
- Success rate: 95%
Electrical Repairs
Repairing damaged wiring or connections that affect SAS functionality.
- Total: $100 - $200
- Success rate: 90%
Money-Saving Tips for C0958
- 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 C0958 Diagnosis Process
Follow these systematic steps to accurately diagnose C0958. Each step builds on the previous one to ensure accurate diagnosis.
Step 1: Step 1: Perform an initial visual inspection to check for damaged wiring, loose connections, or corrosion around the sensor area (5-10 minutes)
Step 1: Perform an initial visual inspection to check for damaged wiring, loose connections, or corrosion around the sensor area (5-10 minutes).
Step 2: Step 2: Use the GeekOBD APP for an OBD2 scan to retrieve all codes and freeze frame data, understanding the context of the fault (10-15 minutes)
Step 2: Use the GeekOBD APP for an OBD2 scan to retrieve all codes and freeze frame data, understanding the context of the fault (10-15 minutes).
Step 3: Step 3: Conduct component testing with a multimeter to check the voltage and resistance of the SAS (20-30 minutes)
Step 3: Conduct component testing with a multimeter to check the voltage and resistance of the SAS (20-30 minutes).
Step 4: Step 4: After repairs, perform a system function test to ensure the SAS operates correctly and clear the codes (10-15 minutes)
Step 4: After repairs, perform a system function test to ensure the SAS operates correctly and clear the codes (10-15 minutes).
Step 5: Step 5: Conduct a road test under various driving conditions to confirm the repair's success and ensure the vehicle handles properly (15-20 minutes)
Step 5: Conduct a road test under various driving conditions to confirm the repair's success and ensure the vehicle handles properly (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 in 2017 Chevrolet Silverado
Vehicle: 2017 Chevrolet Silverado 1500, 45,000 miles
Problem: Customer reported intermittent stability control light and difficulty steering.
Diagnosis: Using the GeekOBD APP, the diagnostic scan revealed C0958. A visual inspection showed damaged wiring leading to the SAS.
Solution: Replaced the Steering Angle Sensor and repaired the damaged wiring.
Cost: $250 (sensor $150, wiring repair $100)
Result: Customer reported improved steering response and no warning lights after the repair.
Case Study 2: Electrical Issues Leading to C0958 in 2018 GMC Sierra
Vehicle: 2018 GMC Sierra 1500, 30,000 miles
Problem: The driver experienced a persistent check engine light and erratic steering behavior.
Diagnosis: Diagnostic scan showed C0958; further testing indicated poor electrical connections.
Solution: Repaired the wiring harness and cleaned connectors to restore proper function.
Cost: $180 (electrical repairs)
Result: Post-repair road tests confirmed the vehicle functioned correctly with no more codes.