Quick Answer
C0073 means: C0073 indicates an issue with the steering angle sensor circuit.
Can I drive with C0073? Immediate attention is needed to avoid safety risks.
Common Questions
What does C0073 mean and how does it affect my car?
C0073 indicates a malfunction in the steering angle sensor circuit, which can lead to issues with your vehicle's stability control and traction systems. This may result in poor steering response and potential safety risks if not addressed.
What are the most common causes of C0073 and how much does it cost to fix?
The most common causes include a faulty steering angle sensor or damaged wiring, with repair costs ranging from $50 to $300 depending on the specific issue and parts needed.
Can I drive my car with C0073 or should I stop immediately?
It is not advisable to drive your car with C0073 as it can affect your ability to control the vehicle, especially in emergencies. It's best to seek a professional diagnosis and repair as soon as possible.
How can I diagnose C0073 myself using GeekOBD APP?
Using the GeekOBD APP, you can scan for DTC codes, view live data from the steering angle sensor, and analyze freeze frame data to understand the conditions under which the error occurred. This can aid in pinpointing the issue.
What vehicles are most commonly affected by C0073?
Commonly affected vehicles include 2010-2018 Chevrolet Silverado, GMC Sierra, and some Cadillac models. Always check for any recalls or Technical Service Bulletins (TSBs) related to steering sensors.
How can I prevent C0073 from happening again?
Regular maintenance checks on your steering system, ensuring proper installation after repairs, and using quality parts can help prevent the recurrence of the C0073 code.
What is C0073?
The Diagnostic Trouble Code (DTC) C0073 indicates a problem with the steering angle sensor circuit, particularly in vehicles like the 2010-2018 Chevrolet Silverado and GMC Sierra. This code generally points to an issue where the steering angle sensor is unable to send accurate data to the vehicle's Electronic Stability Control (ESC) system. The steering angle sensor is crucial for the functionality of advanced driving systems, including traction control and stability systems. If this code appears, it may lead to erratic steering behavior, difficulty in maintaining a straight path, or unexpected activation of the traction control or ABS systems. In the worst-case scenario, ignoring this issue could lead to a loss of vehicle control, especially in slippery conditions. Therefore, it’s important to address this code promptly. Drivers may notice warning lights illuminating on the dashboard, such as the ABS or traction control light, as the vehicle’s onboard diagnostics indicate a malfunction. Regular checks of the steering components and ensuring proper calibration of the sensor can help prevent this code from triggering in the future.
System: C - Chassis (ABS, Steering, Suspension)
Symptoms
Common symptoms when C0073 is present:
- The check engine light may illuminate, indicating a fault in the steering angle sensor.
- Drivers may experience difficulty steering, especially during tight turns, which can feel unresponsive or overly sensitive.
- Increased activation of the traction control or ABS systems, leading to unexpected braking or loss of power during acceleration.
- Unusual noises from the steering column, such as grinding or clicking, could signal a mechanical issue.
- Inconsistent steering response when driving on highways, making it hard to maintain a straight line.
Possible Causes
Most common causes of C0073 (ordered by frequency):
- The most common cause is a faulty steering angle sensor, which is responsible for monitoring the position of the steering wheel. This accounts for approximately 60% of cases.
- Another frequent issue is damaged wiring or connectors associated with the steering angle sensor, leading to poor electrical signals.
- Improper calibration after service or replacement of steering components can also trigger the C0073 code, highlighting the importance of accurate installation.
- Less common, but serious, is a malfunctioning electronic control module (ECM) that misinterprets the sensor's data, potentially requiring extensive diagnosis.
- A rare cause could be contamination or physical obstruction affecting the sensor's ability to read accurately.
C0073 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%
Wiring Repair
Repairing damaged wiring or connectors associated with the sensor.
- Total: $50 - $150
- Success rate: 90%
Money-Saving Tips for C0073
- 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 C0073 Diagnosis Process
Follow these systematic steps to accurately diagnose C0073. 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 or specific diagnostic tools to test the steering angle sensor's voltage output (20-30 minutes)
Step 3: Component testing - Use a multimeter or specific diagnostic tools to test the steering angle sensor's voltage output (20-30 minutes).
Step 4: Step 4: System function test - Verify proper operation of the steering angle sensor after repairs and clear codes using GeekOBD APP (10-15 minutes)
Step 4: System function test - Verify proper operation of the steering angle sensor after repairs and clear codes using GeekOBD APP (10-15 minutes).
Step 5: Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and ensure stability systems work correctly (15-20 minutes)
Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and ensure stability systems work correctly (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 2015 Chevrolet Silverado
Vehicle: 2015 Chevrolet Silverado 1500, 70,000 miles
Problem: Customer reported the ABS light was on, and steering felt unresponsive.
Diagnosis: Scanned using GeekOBD APP, confirmed C0073 code. Visual inspection revealed damaged wiring.
Solution: Replaced the steering angle sensor and repaired wiring connections.
Cost: $250 (sensor $200, labor $50)
Result: After repairs, the ABS light was cleared, and steering response was restored.
Case Study 2: Wiring Repair for C0073 in 2013 GMC Sierra
Vehicle: 2013 GMC Sierra 1500, 85,000 miles
Problem: Customer noticed traction control light blinking during acceleration.
Diagnosis: Identified C0073 code through OBD scan, performed wiring inspection.
Solution: Repaired damaged wiring in the steering column.
Cost: $100 (labor $50, wiring $50)
Result: Traction control system functioned normally after repairs.