Quick Answer
C0308 means: C0308 indicates a steering angle sensor problem affecting stability control.
Can I drive with C0308? Immediate attention is recommended to ensure safe vehicle operation.
Common Questions
What does C0308 mean and how does it affect my car?
DTC C0308 indicates an issue with the steering angle sensor that can lead to instability in your vehicle's handling. If ignored, it may compromise your safety and lead to uneven tire wear.
What are the most common causes of C0308 and how much does it cost to fix?
Common causes include a faulty steering angle sensor, wiring issues, and poor calibration. Repair costs typically range from $150 to $300, depending on the issue.
Can I drive my car with C0308 or should I stop immediately?
It's best to address the C0308 code promptly. Driving with this issue can lead to loss of traction control, making it unsafe, especially in adverse weather conditions.
How can I diagnose C0308 myself using GeekOBD APP?
Using the GeekOBD APP, you can scan for codes, view freeze frame data, and check live sensor data to diagnose the issue with the steering angle sensor.
What vehicles are most commonly affected by C0308?
Commonly affected vehicles include the 2007-2014 Chevrolet Silverado and GMC Sierra. Be sure to check for recalls or technical service bulletins related to this code.
How can I prevent C0308 from happening again?
Regular maintenance, including checking wiring and ensuring proper calibration after repairs, can help prevent the recurrence of the C0308 code.
What is C0308?
DTC C0308 is a diagnostic trouble code that typically indicates a problem with the steering angle sensor circuit within the vehicle’s stability control system. When this code triggers, it may signify that the steering angle sensor is not functioning correctly or that there are issues in the wiring and connectors leading to the sensor. This code is most commonly found in vehicles like the 2007-2014 Chevrolet Silverado and GMC Sierra models, which are equipped with advanced stability control features. In practical terms, this means that your vehicle may exhibit erratic handling, difficulty in maintaining a straight line, or even engaging the stability control system unexpectedly. Ignoring this issue can lead to premature wear on tires due to uneven steering and could compromise vehicle safety by affecting the traction control system. If you see code C0308, it’s essential to address it promptly to avoid further complications and ensure a safe driving experience.
System: C - Chassis (ABS, Steering, Suspension)
Symptoms
Common symptoms when C0308 is present:
- Check engine light illuminated continuously, indicating a persistent issue with the steering angle sensor.
- Vehicle exhibits erratic steering response, where the steering feels loose or unresponsive, particularly during turns.
- Traction control warning light appears intermittently, suggesting that the stability control system is being affected.
- Difficulty maintaining a straight line on the road may be experienced, leading to a sense of insecurity while driving.
- Vehicle may enter limp mode, reducing power and speed as a precaution when the system detects issues.
Possible Causes
Most common causes of C0308 (ordered by frequency):
- {'cause': 'Faulty steering angle sensor (70%) - The most common cause is a malfunctioning sensor that fails to send correct signals to the vehicle’s computer.', 'details': 'Over time, wear and tear or exposure to moisture can lead to sensor failure.'}
- {'cause': 'Wiring issues (15%) - Damaged or corroded wiring leading to the steering angle sensor can interrupt communication.', 'details': 'Visual inspection can often reveal frayed or broken wires.'}
- {'cause': 'Poor calibration (10%) - If the steering angle sensor is not properly calibrated after a repair, it may trigger this code.', 'details': 'Calibration is typically done using specialized diagnostic tools like the GeekOBD APP.'}
- {'cause': 'Module failure (3%) - A malfunctioning electronic control module (ECM) can cause erroneous readings from the sensor.', 'details': 'This is less common but can lead to extensive vehicle diagnostics.'}
- {'cause': 'Environmental factors (2%) - Extreme temperature changes or exposure to elements can affect sensor performance.', 'details': 'Regular maintenance checks can help mitigate these effects.'}
C0308 Repair Costs
Cost Breakdown by Repair Type
Steering Angle Sensor Replacement
Replacing a faulty steering angle sensor to restore proper functionality.
- Total: $150 - $300
- Success rate: 95%
Wiring Repair
Repairing damaged wiring connections leading to the steering angle sensor.
- Total: $50 - $150
- Success rate: 90%
Money-Saving Tips for C0308
- 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 C0308 Diagnosis Process
Follow these systematic steps to accurately diagnose C0308. 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 (5-10 minutes)
Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion (5-10 minutes).
Step 2: Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context (10-15 minutes)
Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context (10-15 minutes).
Step 3: Step 3: Component testing - Use a multimeter to test the voltage output from the steering angle sensor (20-30 minutes)
Step 3: Component testing - Use a multimeter to test the voltage output from the steering angle sensor (20-30 minutes).
Step 4: Step 4: Calibration check - Ensure the steering angle sensor is properly calibrated using the GeekOBD APP (10-15 minutes)
Step 4: Calibration check - Ensure the steering angle sensor is properly calibrated using the GeekOBD APP (10-15 minutes).
Step 5: Step 5: System function test - Verify proper operation after repairs and clear codes, followed by a road test (15-20 minutes)
Step 5: System function test - Verify proper operation after repairs and clear codes, followed by a road test (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 2010 GMC Sierra
Vehicle: 2010 GMC Sierra, 85,000 miles
Problem: Customer reported issues with stability control and persistent warning lights.
Diagnosis: After scanning with the GeekOBD APP, the C0308 code was confirmed. A visual inspection revealed a faulty steering angle sensor.
Solution: Replaced the steering angle sensor and recalibrated using the GeekOBD APP.
Cost: $250 (parts: $150 for sensor, $100 for labor)
Result: Vehicle handled smoothly post-repair and stability control functions were restored.
Case Study 2: Wiring Issues on 2012 Chevrolet Silverado
Vehicle: 2012 Chevrolet Silverado, 70,000 miles
Problem: Driver noticed erratic steering and traction control lights flashing.
Diagnosis: C0308 confirmed through OBD scan. Damaged wiring was found near the steering column.
Solution: Repaired the wiring harness and recalibrated the steering angle sensor.
Cost: $120 (parts: $20 for wiring, $100 for labor)
Result: Stability control system returned to normal operation with no further codes.