Quick Answer
C0349 means: DTC C0349 means there's an issue with the steering angle sensor circuit.
Can I drive with C0349? Address this issue immediately to ensure safe vehicle operation.
Common Questions
What does C0349 mean and how does it affect my car?
DTC C0349 indicates a problem with your steering angle sensor, which can lead to difficulties in steering and handling. It's crucial to address this issue promptly to ensure safe vehicle operation.
What are the most common causes of C0349 and how much does it cost to fix?
Most often, C0349 is caused by a faulty steering angle sensor or damaged wiring. Repair costs can range from $100 for wiring repairs to $300 for sensor replacement.
Can I drive my car with C0349 or should I stop immediately?
It's advisable to address the C0349 code as soon as possible. Driving with this code can compromise steering control, leading to unsafe driving conditions.
How can I diagnose C0349 myself using GeekOBD APP?
You can use the GeekOBD APP to scan for codes and retrieve freeze frame data. This helps you understand the context of the fault before taking further diagnostic steps.
What vehicles are most commonly affected by C0349?
The C0349 code is commonly found in 2015-2018 Chevrolet Silverado and GMC Sierra models, along with some other GM vehicles from that period.
How can I prevent C0349 from happening again?
Regular maintenance of your vehicle's steering system, including checking for wear and tear on the wiring and connectors, can help prevent C0349 from recurring.
What is C0349?
DTC C0349 refers to a diagnostic trouble code indicating a problem with the steering angle sensor circuit. This code typically arises when there is a malfunction within the sensor, the wiring, or the electronic control unit (ECU) that deals with steering dynamics. For car owners, this means that your vehicle may experience issues with steering responsiveness, which can significantly affect driving safety. When this code appears, the steering system may not function as intended, leading to impaired handling. You might notice the 'Check Engine' light illuminate, or in some cases, the vehicle may go into a default mode to protect itself, which can limit power steering functionality. For many drivers, especially in popular models like the 2015-2018 Chevrolet Silverado or GMC Sierra, the C0349 code can lead to a frustrating driving experience. Ignoring this code can lead to further complications, including potential steering failures, which pose serious safety risks. Therefore, addressing the C0349 trouble code promptly is crucial for maintaining vehicle performance and safety.
System: C - Chassis (ABS, Steering, Suspension)
Symptoms
Common symptoms when C0349 is present:
- The 'Check Engine' light stays on constantly, indicating a persistent issue that requires attention.
- Steering feels unresponsive or erratic, making it difficult to control the vehicle smoothly.
- The vehicle may exhibit warning messages on the dashboard, such as 'Service Stabilitrak' or 'Power Steering Assist Off.'
- In some cases, the steering wheel may feel heavy or stiff, particularly when making sharp turns.
- Fuel economy may decrease due to the vehicle compensating for the faulty steering system.
Possible Causes
Most common causes of C0349 (ordered by frequency):
- The most common cause is a faulty steering angle sensor, which accounts for approximately 60% of cases. This sensor detects the angle of the steering wheel and sends that information to the ECU.
- Another frequent issue is damaged wiring or poor connections in the steering angle sensor circuit. This can lead to intermittent signals or complete failure and occurs in about 20% of cases.
- A malfunctioning ECU can also cause the C0349 code. While this is less common, around 10% of cases are due to software or hardware failures within the vehicle's computer system.
- Less common causes include physical obstructions or damage to the steering system, which might disrupt sensor readings.
- In rare cases, issues with the vehicle's electrical system, such as low battery voltage or ground issues, can trigger this code.
C0349 Repair Costs
Cost Breakdown by Repair Type
Steering Angle Sensor Replacement
Replacing the faulty steering angle sensor to restore proper functionality.
- Total: $150 - $300
- Success rate: 90%
Wiring Repair
Repairing damaged wiring or connections in the sensor circuit.
- Total: $100 - $200
- Success rate: 80%
ECU Reprogramming
Reprogramming or replacing the ECU if the issue stems from computer malfunction.
- Total: $300 - $1,000
- Success rate: 70%
Money-Saving Tips for C0349
- 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 C0349 Diagnosis Process
Follow these systematic steps to accurately diagnose C0349. 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 in the steering angle sensor circuit (5-10 minutes)
Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion in the steering angle sensor circuit (5-10 minutes).
Step 2: Step 2: OBD2 scan with GeekOBD APP - Use the app to retrieve all codes and freeze frame data to understand the fault context better (10-15 minutes)
Step 2: OBD2 scan with GeekOBD APP - Use the app to retrieve all codes and freeze frame data to understand the fault context better (10-15 minutes).
Step 3: Step 3: Component testing - Utilize a multimeter or specific diagnostic tools to test the steering angle sensor and related components for proper function (20-30 minutes)
Step 3: Component testing - Utilize a multimeter or specific diagnostic tools to test the steering angle sensor and related components for proper function (20-30 minutes).
Step 4: Step 4: System function test - After repairs, verify the proper operation of the steering system and clear codes using the GeekOBD APP (10-15 minutes)
Step 4: System function test - After repairs, verify the proper operation of the steering system and clear 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 repair was successful and the C0349 code does not return (15-20 minutes)
Step 5: Road test verification - Drive the vehicle under various conditions to confirm that the repair was successful and the C0349 code does not return (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, Mileage: 45,000 miles
Problem: Customer reported intermittent steering issues and the 'Check Engine' light.
Diagnosis: After scanning with the GeekOBD APP, the C0349 code was confirmed. A visual inspection revealed a faulty steering angle sensor.
Solution: Replaced the steering angle sensor and reprogrammed the ECU.
Cost: $250 (sensor: $150, labor: $100)
Result: The steering function returned to normal, and the 'Check Engine' light was cleared.
Case Study 2: Wiring Repair on 2017 GMC Sierra
Vehicle: 2017 GMC Sierra, Mileage: 60,000 miles
Problem: Steering felt heavy, and the dashboard displayed multiple warning messages.
Diagnosis: Diagnostic steps uncovered damaged wiring in the steering angle sensor circuit.
Solution: Repaired the damaged wiring and ensured all connections were secure.
Cost: $150 (labor: $100, parts: $50)
Result: Restored normal steering function and cleared the C0349 code.