Quick Answer
C0855 means: C0855 indicates a malfunction in the steering angle sensor, affecting vehicle stability systems.
Can I drive with C0855? It is important to address this issue promptly to maintain safe driving conditions.
Common Questions
What does C0855 mean and how does it affect my car?
The C0855 code indicates a problem with your steering angle sensor, affecting your vehicle's stability control. If not addressed, this can lead to unsafe driving conditions, particularly during sharp turns or inclement weather.
What are the most common causes of C0855 and how much does it cost to fix?
Common causes include a faulty steering angle sensor and damaged wiring, with repair costs generally ranging from $150 to $300 for sensor replacement.
Can I drive my car with C0855 or should I stop immediately?
While you can technically drive your car with C0855, it is not advisable due to potential safety risks. It's best to get it checked out as soon as possible.
How can I diagnose C0855 myself using GeekOBD APP?
Using the GeekOBD APP, you can scan for error codes, check freeze frame data, and monitor real-time sensor data to help diagnose the C0855 issue effectively.
What vehicles are most commonly affected by C0855?
Common vehicles affected by C0855 include the 2010-2018 Chevrolet Silverado, GMC Sierra, and other GM models with similar systems.
How can I prevent C0855 from happening again?
Regular maintenance of your vehicle's steering and suspension systems, including inspections and timely repairs, can help prevent issues with the steering angle sensor.
What is C0855?
The DTC code C0855 refers to a problem with the steering angle sensor, which is a crucial component in your vehicle’s stability control system. This sensor measures the angle of the steering wheel and sends that information to the vehicle's computer systems, such as the ABS (Anti-lock Braking System) and ESC (Electronic Stability Control). When the C0855 code is triggered, it indicates that the steering angle sensor is either malfunctioning or providing incorrect data. This can manifest in various ways, such as the vehicle’s stability control system not functioning correctly, which can lead to compromised handling, especially in adverse conditions. Vehicles from manufacturers like Chevrolet and GMC, particularly models from 2010 to 2018, are often reported to have this issue. Ignoring this code can lead to safety hazards, reduced fuel efficiency, and increased wear on other components in the steering and suspension systems. Proper diagnosis and repair are essential to ensure the safety and performance of your vehicle.
System: C - Chassis (ABS, Steering, Suspension)
Symptoms
Common symptoms when C0855 is present:
- The check engine light illuminates on your dashboard, indicating a fault that needs attention.
- Unusual steering behavior, such as the steering wheel feeling loose or unresponsive while driving.
- Stability control warning lights activating intermittently, especially during cornering or sudden maneuvers.
- Difficulty in aligning the vehicle during a wheel alignment, indicating that the steering angle sensor readings are inaccurate.
- Increased tire wear due to misalignment caused by incorrect steering inputs detected by the vehicle’s systems.
Possible Causes
Most common causes of C0855 (ordered by frequency):
- The most common cause of the C0855 code is a faulty steering angle sensor, which has a likelihood of about 70%. This can occur due to wear and tear or electrical issues.
- Another possible cause is damaged wiring or connectors related to the steering angle sensor, which can disrupt the signal and lead to faults.
- Improper calibration of the steering angle sensor after a wheel alignment or suspension work can also trigger this code. Ensuring calibration is critical after repairs.
- Less common causes include issues with the vehicle's ABS module, which may require advanced diagnostics to identify.
- In rare cases, a software glitch in the vehicle’s ECU may lead to erroneous readings from the steering angle sensor.
C0855 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%
Wiring Repair
Repairing damaged wiring or connectors related to the sensor.
- Total: $50 - $150
- Success rate: 75%
Money-Saving Tips for C0855
- 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 C0855 Diagnosis Process
Follow these systematic steps to accurately diagnose C0855. Each step builds on the previous one to ensure accurate diagnosis.
Step 1: Step 1: Conduct an initial visual inspection of the steering angle sensor and its wiring for damage or loose connections, which should take about 5-10 minutes
Step 1: Conduct an initial visual inspection of the steering angle sensor and its wiring for damage or loose connections, which should take about 5-10 minutes.
Step 2: Step 2: Use the GeekOBD APP to perform an OBD2 scan and retrieve the C0855 code along with any other present codes to understand the full context of the fault, requiring around 10-15 minutes
Step 2: Use the GeekOBD APP to perform an OBD2 scan and retrieve the C0855 code along with any other present codes to understand the full context of the fault, requiring around 10-15 minutes.
Step 3: Step 3: Test the steering angle sensor using a multimeter or specialized diagnostic tool to check for proper functioning and electrical signals, this step can take 20-30 minutes
Step 3: Test the steering angle sensor using a multimeter or specialized diagnostic tool to check for proper functioning and electrical signals, this step can take 20-30 minutes.
Step 4: Step 4: After repairs, conduct a system function test to ensure the steering angle sensor and related systems operate correctly, which should take about 10-15 minutes
Step 4: After repairs, conduct a system function test to ensure the steering angle sensor and related systems operate correctly, which should take about 10-15 minutes.
Step 5: Step 5: Perform a road test under various driving conditions to confirm that the repair has resolved the issue and that all systems are functioning as intended, which may require 15-20 minutes
Step 5: Perform a road test under various driving conditions to confirm that the repair has resolved the issue and that all systems are functioning as intended, which may require 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 a check engine light and unstable steering during driving.
Diagnosis: Diagnostic tests revealed a C0855 code, indicating a faulty steering angle sensor.
Solution: Replaced the steering angle sensor with an OEM part and recalibrated the system.
Cost: $220 (sensor: $150, labor: $70)
Result: After repairs, the stability control system functioned correctly, and the check engine light was cleared.
Case Study 2: Wiring Repair on 2013 GMC Sierra
Vehicle: 2013 GMC Sierra 1500, 90,000 miles
Problem: Customer noticed stability control warning lights and steering issues.
Diagnosis: Inspection revealed damaged wiring to the steering angle sensor, causing intermittent failures.
Solution: Repaired the damaged wiring and ensured all connections were secure.
Cost: $100 (labor: $50, parts: $50)
Result: Resolved the issue, and the vehicle passed a road test with no further warning lights.