Quick Answer
C0664 means: DTC C0664 refers to a fault in the steering wheel position sensor, affecting vehicle stability.
Can I drive with C0664? Immediate attention is recommended to ensure safe driving.
Common Questions
What does C0664 mean and how does it affect my car?
DTC C0664 indicates a problem with the steering wheel position sensor. This sensor communicates the angle of the steering wheel to the vehicle's computer, impacting systems like traction control and electronic stability. If this sensor fails, you may experience erratic steering behavior, which can compromise your safety while driving.
What are the most common causes of C0664 and how much does it cost to fix?
The most common cause of C0664 is a faulty steering wheel position sensor, which usually costs between $150 to $300 to replace. Other potential causes include damaged wiring or incorrect installation after repairs. It's essential to have a qualified technician diagnose the specific issue to get an accurate repair estimate.
Can I drive my car with C0664 or should I stop immediately?
Driving with the C0664 code is risky, as it affects the steering and stability control systems. If you notice any symptoms like loose steering or warning lights, it’s best to stop driving and get the issue diagnosed immediately to ensure your safety.
How can I diagnose C0664 myself using GeekOBD APP?
To diagnose C0664 with the GeekOBD APP, connect the device to your car's OBD2 port. Run a full scan to retrieve the code and any freeze frame data. This information can help you understand when the issue occurs, aiding in pinpointing the exact problem during further inspection.
What vehicles are most commonly affected by C0664?
DTC C0664 is frequently encountered in the 2015-2019 Chevrolet Silverado and GMC Sierra models. Other affected vehicles may include certain models of Chevrolet Equinox and GMC Terrain from similar years.
How can I prevent C0664 from happening again?
To prevent C0664 from recurring, regularly inspect your vehicle’s wiring and connectors for wear. If you've had repairs done on the steering system, ensure that they are performed correctly. Routine maintenance and prompt addressing of any dashboard warning lights can also help avoid future issues.
What is C0664?
DTC C0664 indicates a fault with the steering wheel position sensor, often found in vehicles like the 2015-2019 Chevrolet Silverado and GMC Sierra. This sensor is crucial for monitoring the angle of the steering wheel, which helps in various vehicle systems such as stability control and adaptive cruise control. When this code triggers, it suggests that the vehicle's computer has detected an inconsistency or failure in the signal from the steering wheel position sensor. In practical terms, this could lead to issues like the vehicle's traction control system not functioning correctly, or the steering feeling unresponsive. Ignoring this code may result in more severe driving issues, including compromised safety systems. Symptoms often include the illumination of the check engine light, erratic steering feel, or problems with other related systems. It’s important to address this issue promptly to maintain optimal vehicle performance and safety.
System: C - Chassis (ABS, Steering, Suspension)
Symptoms
Common symptoms when C0664 is present:
- The check engine light remains illuminated, indicating a fault detected by the onboard diagnostics.
- The steering feels loose or unresponsive, which may result in difficulty controlling the vehicle, especially during turns.
- There may be issues with the traction control system engaging or disengaging unexpectedly, leading to potential safety risks.
- Inconsistent steering feedback, where the steering does not return to center as it should after a turn.
- You might notice other dashboard warning lights activating, such as the traction control or stability control indicators.
Possible Causes
Most common causes of C0664 (ordered by frequency):
- The most common cause is a faulty steering wheel position sensor, which accounts for about 70% of cases. This can occur due to wear and tear or manufacturing defects.
- Another frequent cause is damaged wiring or connectors related to the sensor, which can lead to signal loss. Check for frayed wires or corrosion.
- Improper calibration after steering column repair or replacement can also trigger this code. Ensuring all components are correctly aligned is critical.
- Less commonly, the vehicle's body control module (BCM) may malfunction, causing incorrect readings from the steering sensor.
- A rare cause could be an internal failure within the vehicle's computer system, although this is typically identified through more extensive diagnostics.
C0664 Repair Costs
Cost Breakdown by Repair Type
Steering Wheel Position Sensor Replacement
Replacing the faulty steering wheel position sensor to restore proper functionality.
- Total: $150 - $300
- Success rate: 90%
Wiring Repair
Repairing damaged wiring or connectors related to the steering wheel sensor.
- Total: $50 - $150
- Success rate: 80%
Money-Saving Tips for C0664
- 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 C0664 Diagnosis Process
Follow these systematic steps to accurately diagnose C0664. Each step builds on the previous one to ensure accurate diagnosis.
Step 1: Step 1: Initial visual inspection - Check for visible damage to the steering wheel position sensor wiring and connectors (5-10 minutes)
Step 1: Initial visual inspection - Check for visible damage to the steering wheel position sensor wiring and connectors (5-10 minutes).
Step 2: Step 2: OBD2 scan with GeekOBD APP - Use the app to retrieve all diagnostic trouble codes, including freeze frame data to understand the fault context (10-15 minutes)
Step 2: OBD2 scan with GeekOBD APP - Use the app to retrieve all diagnostic trouble codes, including freeze frame data to understand the fault context (10-15 minutes).
Step 3: Step 3: Component testing - With a multimeter, test the resistance and voltage of the steering wheel position sensor to ensure it meets specifications (20-30 minutes)
Step 3: Component testing - With a multimeter, test the resistance and voltage of the steering wheel position sensor to ensure it meets specifications (20-30 minutes).
Step 4: Step 4: System function test - Once repairs are made, verify the function of the steering system and clear the codes using the GeekOBD APP (10-15 minutes)
Step 4: System function test - Once repairs are made, verify the function of the steering system and clear the codes using the GeekOBD APP (10-15 minutes).
Step 5: Step 5: Road test verification - Drive the vehicle under various conditions to confirm that the issue has been resolved and no further codes appear (15-20 minutes)
Step 5: Road test verification - Drive the vehicle under various conditions to confirm that the issue has been resolved and no further codes appear (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 Sensor Replacement on 2017 Chevy Silverado
Vehicle: 2017 Chevrolet Silverado 1500, 45,000 miles
Problem: Customer reported the check engine light was on and the steering felt loose.
Diagnosis: Scanned the vehicle and confirmed DTC C0664. Inspected wiring and found no damage, but the sensor was faulty.
Solution: Replaced the steering wheel position sensor and recalibrated the system.
Cost: $250 (parts: $150, labor: $100)
Result: Issue resolved, and the customer reported improved steering response.
Case Study 2: Wiring Repair on 2018 GMC Sierra
Vehicle: 2018 GMC Sierra 1500, 30,000 miles
Problem: Customer experienced erratic steering and warning lights on the dashboard.
Diagnosis: Ran diagnostics and found C0664 along with damaged wiring at the sensor connector.
Solution: Repaired the wiring and secured connections.
Cost: $75 (parts: $25, labor: $50)
Result: Steering function restored, and no further issues reported.