Quick Answer
C0937 means: C0937 indicates a malfunction in the Power Steering Control Module, affecting steering performance.
Can I drive with C0937? Immediate attention is recommended to prevent steering failure.
Common Questions
What does C0937 mean and how does it affect my car?
C0937 indicates an issue with the Power Steering Control Module. This can lead to increased steering effort, making it difficult to control your vehicle, especially during parking or at low speeds. Ignoring this code could result in severe safety issues.
What are the most common causes of C0937 and how much does it cost to fix?
Common causes include a faulty Power Steering Control Module, damaged wiring, or low fluid levels. Repair costs can range from $100 for simple wiring repairs to $800 for module replacement.
Can I drive my car with C0937 or should I stop immediately?
It is advisable to stop driving and address the C0937 code immediately. Driving with a faulty power steering system can lead to complete loss of steering assist, which is a serious safety risk.
How can I diagnose C0937 myself using GeekOBD APP?
Using the GeekOBD APP, you can scan for DTC codes, view live data, and analyze freeze frame data to understand the conditions under which the C0937 code was triggered. This helps identify the problem more effectively.
What vehicles are most commonly affected by C0937?
Commonly affected vehicles include the 2010-2018 Chevrolet Silverado and GMC Sierra. Be sure to check for any recalls or Technical Service Bulletins related to the power steering system.
How can I prevent C0937 from happening again?
Regular maintenance, including checking fluid levels, inspecting wiring, and keeping the steering system clean, can help prevent C0937 from recurring. Additionally, using quality parts during repairs can increase longevity.
What is C0937?
The DTC code C0937 refers to a fault in the Power Steering Control Module, which is crucial for the proper functioning of your vehicle's steering system. This code often indicates that the module is not communicating correctly with the vehicle's engine control unit (ECU). In simpler terms, it means that your car's computer has detected a problem with the power steering system, which can lead to an increase in steering effort and may make the vehicle harder to control. This issue is particularly prevalent in models such as the 2010-2018 Chevrolet Silverado and GMC Sierra. If you’re experiencing this code, you may notice a lack of responsiveness in your steering, making it feel heavy or difficult to maneuver, especially at low speeds or during parking. Ignoring this code can lead to more severe steering problems and potential safety hazards. Thus, timely diagnosis and repair are essential to ensure your steering remains reliable and safe.
System: C - Chassis (ABS, Steering, Suspension)
Symptoms
Common symptoms when C0937 is present:
- The check engine light illuminates continuously, indicating a fault in the steering system.
- Steering feels heavy or unresponsive, particularly noticeable during low-speed maneuvers or parking.
- Inconsistent power steering assist, where the steering may suddenly become harder or easier to turn.
- Unusual noises from the steering column, such as whining or grinding, which could indicate a mechanical issue.
- Intermittent warning messages on the dashboard related to the power steering system.
Possible Causes
Most common causes of C0937 (ordered by frequency):
- The most common cause of C0937 is a faulty Power Steering Control Module, with a likelihood of around 60%. This module may fail due to electrical issues or software glitches.
- Another frequent cause is damaged wiring or connectors leading to the module, which can occur over time due to wear and tear or environmental factors.
- A third cause could be low power steering fluid levels or contamination, which can affect the hydraulic system's performance. Regular maintenance checks can help prevent this.
- Less common but serious is a complete failure of the electric power steering pump or motor, which can lead to total loss of steering assistance.
- A rare cause may involve a malfunction in the vehicle's ECU, which can lead to communication issues with the power steering module.
C0937 Repair Costs
Cost Breakdown by Repair Type
Power Steering Control Module Replacement
Replacing the faulty Power Steering Control Module with a new or refurbished unit.
- Total: $300 - $800
- Success rate: 85%
Wiring Repair
Repairing or replacing damaged wiring and connectors to restore communication with the module.
- Total: $100 - $300
- Success rate: 75%
Money-Saving Tips for C0937
- 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 C0937 Diagnosis Process
Follow these systematic steps to accurately diagnose C0937. Each step builds on the previous one to ensure accurate diagnosis.
Step 1: Step 1: Start with an initial visual inspection to check for any damaged wiring, loose connections, or corrosion around the Power Steering Control Module
Step 1: Start with an initial visual inspection to check for any damaged wiring, loose connections, or corrosion around the Power Steering Control Module. This should take about 5-10 minutes.
Step 2: Step 2: Use an OBD2 scanner or the GeekOBD APP to retrieve all diagnostic codes and freeze frame data
Step 2: Use an OBD2 scanner or the GeekOBD APP to retrieve all diagnostic codes and freeze frame data. This helps contextualize the fault and understand any related issues (10-15 minutes).
Step 3: Step 3: Conduct component testing using a multimeter to measure voltage and resistance in the Power Steering Control Module and related wiring
Step 3: Conduct component testing using a multimeter to measure voltage and resistance in the Power Steering Control Module and related wiring. This step can take 20-30 minutes.
Step 4: Step 4: After any repairs, perform a system function test to ensure the power steering system operates correctly
Step 4: After any repairs, perform a system function test to ensure the power steering system operates correctly. Clear any codes before proceeding with this step (10-15 minutes).
Step 5: Step 5: Finally, conduct a road test under various conditions to confirm that the steering system works properly and that the C0937 code does not reappear (15-20 minutes)
Step 5: Finally, conduct a road test under various conditions to confirm that the steering system works properly and that the C0937 code does not reappear (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: Power Steering Module Replacement in 2015 Chevrolet Silverado
Vehicle: 2015 Chevrolet Silverado 1500, 75,000 miles
Problem: Customer reported heavy steering and the check engine light illuminated.
Diagnosis: After scanning with the GeekOBD APP, C0937 was confirmed. A visual inspection revealed corroded connectors.
Solution: Replaced the Power Steering Control Module and repaired the wiring harness.
Cost: $650 (including parts and labor)
Result: Steering performance returned to normal, and the check engine light was cleared.
Case Study 2: Wiring Repair on 2016 GMC Sierra
Vehicle: 2016 GMC Sierra 1500, 50,000 miles
Problem: Customer experienced intermittent power steering assist.
Diagnosis: DTC C0937 was confirmed after scanning. Wiring damage was found during inspection.
Solution: Repaired the damaged wiring and reconnected the harness.
Cost: $150 (including parts and labor)
Result: Customer reported consistent steering assist post-repair.