Quick Answer
C0956 means: C0956 signifies a failure in the Steering Control Module's operation.
Can I drive with C0956? Immediate attention is recommended to prevent steering failure.
Common Questions
What does C0956 mean and how does it affect my car?
The C0956 code signifies a malfunction in your vehicle's Steering Control Module, which plays a critical role in ensuring that your steering system works properly. When this code appears, it can lead to difficulties in steering, increased effort needed to turn the wheel, and potential safety risks if the issue worsens. It’s essential to address this problem quickly to maintain safe driving conditions.
What are the most common causes of C0956 and how much does it cost to fix?
The primary causes of C0956 include a faulty Steering Control Module, damaged wiring, or issues with the power steering pump. Repair costs can vary significantly, with module replacement ranging from $300 to $800, while wiring repairs might cost between $150 and $300. Always consult a professional for an accurate diagnosis and estimate.
Can I drive my car with C0956 or should I stop immediately?
It is not advisable to drive your vehicle with the C0956 code present. Doing so can compromise steering control and pose safety hazards. If you experience any symptoms like heavy steering or warning lights, it's best to stop driving and seek immediate assistance from a qualified technician.
How can I diagnose C0956 myself using GeekOBD APP?
To diagnose C0956 using the GeekOBD APP, start by connecting the app to your vehicle’s OBD2 port. Perform a full scan to retrieve the error codes. Pay attention to any freeze frame data related to C0956, which can provide insight into when the issue occurs. Follow up with visual inspections of wiring and connectors to identify any obvious faults.
What vehicles are most commonly affected by C0956?
The C0956 code is commonly found in vehicles like the 2015-2020 Chevrolet Silverado and the 2016-2019 GMC Sierra. However, it may also appear in other GM models and certain Ford vehicles. Always check for specific recalls or technical service bulletins related to your vehicle’s make and model.
How can I prevent C0956 from happening again?
Preventing C0956 involves regular maintenance of your vehicle’s electrical system and steering components. Ensure connections are secure and free from corrosion, and have the steering system inspected during routine service intervals. Additionally, be cautious during driving to avoid impacts that could damage steering components.
What is C0956?
DTC C0956 indicates a malfunction in the Steering Control Module, which is crucial for the vehicle's steering system. This code often appears in various makes and models, particularly in vehicles like the 2015-2020 Chevrolet Silverado and 2016-2019 GMC Sierra. When this code is triggered, it usually means that the module is not communicating properly with other systems, which can affect steering responsiveness and overall vehicle safety. A malfunctioning Steering Control Module can lead to a loss of power steering assist, making it difficult to maneuver the vehicle, especially at low speeds or during turns. This can create a safety hazard, as the driver may struggle to maintain control. Additionally, if left unchecked, it could lead to further electrical issues in the vehicle, potentially increasing repair costs down the line. It's important for car owners to address this issue promptly and consult with a qualified technician who can diagnose and repair the problem effectively.
System: C - Chassis (ABS, Steering, Suspension)
Symptoms
Common symptoms when C0956 is present:
- The check engine light illuminates on the dashboard, indicating a fault in the steering system.
- Drivers may experience unexpected steering resistance, particularly during low-speed maneuvers, making the vehicle hard to control.
- Increased effort is required to turn the steering wheel, often resulting in driver fatigue during longer trips.
- The vehicle may exhibit wandering or pulling to one side while driving due to steering instability.
- In some cases, the power steering assist may completely fail, leading to a 'manual' steering experience, especially alarming for inexperienced drivers.
Possible Causes
Most common causes of C0956 (ordered by frequency):
- The most common cause of the C0956 code is a faulty Steering Control Module, which accounts for about 60% of cases. This can happen due to electrical failures or software issues.
- Another prevalent cause is damaged wiring or connectors within the steering system, which can cause intermittent communication failures with the module.
- A less common cause could be a malfunctioning power steering pump that impacts the assist functionality, and regular inspections can help prevent this.
- In rare instances, a failing battery or alternator can lead to voltage drops, affecting module performance. It's crucial to maintain the vehicle's electrical system.
- Additionally, severe impacts from accidents can damage steering components, leading to this error code being triggered.
C0956 Repair Costs
Cost Breakdown by Repair Type
Steering Control Module Replacement
Replacing the faulty steering control module with a new or refurbished unit.
- Total: $300 - $800
- Success rate: 90%
Wiring Repair
Repairing or replacing damaged wiring or connectors in the steering system.
- Total: $150 - $300
- Success rate: 80%
Money-Saving Tips for C0956
- 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 C0956 Diagnosis Process
Follow these systematic steps to accurately diagnose C0956. Each step builds on the previous one to ensure accurate diagnosis.
Step 1: Step 1: Conduct an initial visual inspection of the steering system, looking for damaged wiring, loose connections, or signs of corrosion (5-10 minutes)
Step 1: Conduct an initial visual inspection of the steering system, looking for damaged wiring, loose connections, or signs of corrosion (5-10 minutes).
Step 2: Step 2: Use the GeekOBD APP to perform an OBD2 scan
Step 2: Use the GeekOBD APP to perform an OBD2 scan. Retrieve all codes along with freeze frame data to understand the context of the fault (10-15 minutes).
Step 3: Step 3: Test components like the Steering Control Module and associated sensors using a multimeter or specific diagnostic tools to check for proper function (20-30 minutes)
Step 3: Test components like the Steering Control Module and associated sensors using a multimeter or specific diagnostic tools to check for proper function (20-30 minutes).
Step 4: Step 4: After completing any repairs, perform a system function test to verify proper operation and clear any stored codes in the system (10-15 minutes)
Step 4: After completing any repairs, perform a system function test to verify proper operation and clear any stored codes in the system (10-15 minutes).
Step 5: Step 5: Conduct a road test to ensure the steering system operates correctly under various conditions, confirming the success of the repair (15-20 minutes)
Step 5: Conduct a road test to ensure the steering system operates correctly under various conditions, confirming the success of the repair (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 Control Module Replacement in a 2017 Chevrolet Silverado
Vehicle: 2017 Chevrolet Silverado, 45,000 miles
Problem: Customer reported difficulty in steering and the check engine light was illuminated.
Diagnosis: Diagnostic scan revealed C0956, indicating a fault in the Steering Control Module. Visual inspection showed no damaged wiring, but the module was non-responsive.
Solution: Replaced the Steering Control Module and cleared the fault codes. Conducted a road test to confirm proper operation.
Cost: $650 (module cost: $500, labor cost: $150)
Result: The customer reported improved steering responsiveness and no further issues.
Case Study 2: Wiring Repair on a 2018 GMC Sierra
Vehicle: 2018 GMC Sierra, 30,000 miles
Problem: Customer noticed heavy steering and the check engine light was on.
Diagnosis: C0956 was confirmed through diagnostic tools. Inspection revealed frayed wiring near the steering module.
Solution: Repaired the damaged wiring and re-secured connections. Cleared codes and performed a system test.
Cost: $220 (labor cost: $100, parts cost: $120)
Result: Steering performance returned to normal, and the check engine light did not reappear.