Quick Answer
C0370 means: DTC C0370 indicates a problem with the steering angle sensor circuit, affecting vehicle handling and stability control.
Can I drive with C0370? Immediate attention is recommended to ensure safe vehicle operation.
Common Questions
What does C0370 mean and how does it affect my car?
C0370 indicates a malfunction in your vehicle's steering angle sensor circuit. This can lead to issues with handling, especially in adverse weather, as your stability control system may not function correctly. Addressing this promptly is crucial for safe driving.
What are the most common causes of C0370 and how much does it cost to fix?
The most common cause is a faulty steering angle sensor, which typically costs between $150 to $300 to replace. Other causes include damaged wiring or software issues, which may also require additional diagnostic work.
Can I drive my car with C0370 or should I stop immediately?
While you may still drive your vehicle, it is not recommended as the handling could be compromised, leading to safety issues. It’s best to have the issue diagnosed and repaired as soon as possible.
How can I diagnose C0370 myself using GeekOBD APP?
Using the GeekOBD APP, you can scan your vehicle for DTCs, view freeze frame data, and clear codes. It also provides live data monitoring, allowing you to see the steering angle readings to help confirm if the sensor is faulty.
What vehicles are most commonly affected by C0370?
DTC C0370 is frequently seen in vehicles such as the 2010-2018 Chevrolet Silverado and GMC Sierra. Always check for specific recalls or Technical Service Bulletins (TSBs) related to your make and model.
How can I prevent C0370 from happening again?
Regular maintenance, such as checking electrical connections and ensuring no water intrusion occurs in the steering column, can help prevent future issues. Keeping software updated can also mitigate sensor errors.
What is C0370?
The diagnostic trouble code (DTC) C0370 indicates a malfunction in the steering angle sensor circuit, which is crucial for the stability control and traction control systems in vehicles. This code is commonly found in various Chevrolet and GMC models, particularly those manufactured between 2010 and 2018. The steering angle sensor measures the position of the steering wheel and sends this information to the vehicle's computer. If the sensor fails or if there are issues with the wiring or connectors, the vehicle may exhibit erratic behavior, such as difficulty steering, or the stability/traction control system may deactivate. A malfunctioning steering angle sensor can lead to safety concerns as it may affect the vehicle's handling, especially in slippery conditions. Car owners might notice the 'Service Stabilitrak' or 'Check Engine' lights illuminated on the dashboard. If you encounter DTC C0370, it’s essential to address the issue promptly to ensure safe driving and to avoid further complications with your vehicle's electronic systems.
System: C - Chassis (ABS, Steering, Suspension)
Symptoms
Common symptoms when C0370 is present:
- The 'Check Engine' light or 'Service Stabilitrak' warning light stays illuminated on the dashboard, indicating a system fault.
- The steering feels unusually loose or tight, making it difficult to control the vehicle, especially during turns.
- Increased tire wear can occur as a result of improper alignment due to sensor malfunction, which can be measured during routine inspections.
- Poor traction during rainy or slippery conditions, as the stability control system may not function correctly due to the sensor issue.
- The vehicle may exhibit erratic ABS behavior, with the ABS light flashing intermittently while driving.
Possible Causes
Most common causes of C0370 (ordered by frequency):
- The most common cause is a faulty steering angle sensor, with a likelihood of about 60%. This can happen due to wear and tear over time or a manufacturing defect.
- A second common cause is damaged wiring or connectors in the steering column, which may occur from repeated movement or impact, leading to intermittent connectivity.
- Thirdly, software issues within the vehicle’s electronic control unit (ECU) can cause erroneous readings from the sensor. Regular software updates may help prevent this.
- Less common but serious can be a malfunctioning ABS module that fails to read the sensor inputs properly, affecting overall vehicle safety.
- A rare cause might be water intrusion in the sensor area, which can happen if seals are damaged, leading to corrosion and sensor failure.
C0370 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: 85%
Money-Saving Tips for C0370
- 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 C0370 Diagnosis Process
Follow these systematic steps to accurately diagnose C0370. Each step builds on the previous one to ensure accurate diagnosis.
Step 1: Step 1: Initial visual inspection - Check for damaged wiring, loose connectors, or corrosion, particularly around the steering column (5-10 minutes)
Step 1: Initial visual inspection - Check for damaged wiring, loose connectors, or corrosion, particularly around the steering column (5-10 minutes).
Step 2: Step 2: OBD2 scan with GeekOBD APP - Use the app to retrieve the current DTCs and freeze frame data to understand the fault context (10-15 minutes)
Step 2: OBD2 scan with GeekOBD APP - Use the app to retrieve the current DTCs and freeze frame data to understand the fault context (10-15 minutes).
Step 3: Step 3: Component testing - Test the steering angle sensor using a multimeter to check for proper voltage and resistance (20-30 minutes)
Step 3: Component testing - Test the steering angle sensor using a multimeter to check for proper voltage and resistance (20-30 minutes).
Step 4: Step 4: System function test - After repairs, verify the correct operation of the steering angle sensor and clear any codes using the GeekOBD APP (10-15 minutes)
Step 4: System function test - After repairs, verify the correct operation of the steering angle sensor and clear any codes using the GeekOBD APP (10-15 minutes).
Step 5: Step 5: Road test verification - Drive the vehicle under various conditions to ensure the stability and traction control systems function properly (15-20 minutes)
Step 5: Road test verification - Drive the vehicle under various conditions to ensure the stability and traction control systems function 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 on 2015 Chevrolet Silverado
Vehicle: 2015 Chevrolet Silverado 1500, 75,000 miles
Problem: Customer reported intermittent 'Service Stabilitrak' alert and poor steering response.
Diagnosis: After extracting DTC C0370 with the GeekOBD APP, visual inspection revealed frayed wiring at the steering column.
Solution: Replaced the steering angle sensor and repaired damaged wiring.
Cost: $250 (parts: $150, labor: $100)
Result: Issue resolved, no alerts post-repair, and steering response improved significantly.
Case Study 2: Wiring Repair on 2017 GMC Sierra
Vehicle: 2017 GMC Sierra 1500, 50,000 miles
Problem: Customer complained about constant 'Check Engine' light and steering issues.
Diagnosis: DTC C0370 was confirmed via an OBD2 scan; further inspection showed corrosion on the connector to the steering angle sensor.
Solution: Cleaned the connectors and replaced the sensor.
Cost: $180 (parts: $80, labor: $100)
Result: All lights cleared, and the vehicle handled properly during the road test.