Quick Answer
C0C59 means: C0C59 indicates a fault in the electric power steering system.
Can I drive with C0C59? Immediate attention is recommended to ensure safe driving.
Common Questions
What does C0C59 mean and how does it affect my car?
The C0C59 code indicates an issue with your electric power steering system, which can lead to difficult steering and safety concerns. If you notice stiffness or difficulty turning your steering wheel, it's crucial to address this code promptly to avoid further complications.
What are the most common causes of C0C59 and how much does it cost to fix?
Common causes include a faulty power steering motor and malfunctioning steering angle sensor. Repair costs can vary, ranging from $150 to $800 depending on the repairs needed.
Can I drive my car with C0C59 or should I stop immediately?
It's advisable to stop driving immediately if you see the C0C59 code, as it can affect steering responsiveness and safety. Ignoring the issue could result in a loss of steering control.
How can I diagnose C0C59 myself using GeekOBD APP?
Using the GeekOBD APP, you can perform an OBD2 scan to retrieve the C0C59 code and any related codes. Check the freeze frame data for context, and inspect the power steering components for any visible issues.
What vehicles are most commonly affected by C0C59?
Vehicles like the 2016-2021 Ford Focus and various models from other manufacturers equipped with electric power steering systems are often affected by the C0C59 code.
How can I prevent C0C59 from happening again?
To prevent C0C59 from recurring, ensure regular maintenance of the steering system, keep electrical connections clean, and address any warning signs promptly.
What is C0C59?
The DTC C0C59 code is a manufacturer-specific diagnostic trouble code primarily related to the vehicle's powertrain control module (PCM) and its associated components. This code generally indicates a fault in the communication or performance of the vehicle's electric power steering (EPS) system. When the PCM detects irregularities in sensor signals or other performance indicators, it triggers this code to inform the driver that there is a potential issue that could affect steering responsiveness and safety. For drivers of vehicles such as the 2016-2021 Ford Focus, the appearance of this code may coincide with symptoms like a stiff steering wheel, intermittent loss of power steering, or warning lights illuminating on the dashboard. In the worst-case scenarios, ignoring the C0C59 code can lead to steering failure, which poses a significant safety risk. Therefore, addressing this code promptly is essential for maintaining vehicle control and ensuring safe operation.
System: C - Chassis (ABS, Steering, Suspension)
Symptoms
Common symptoms when C0C59 is present:
- Check engine light stays on constantly, indicating an underlying issue that needs attention.
- Steering wheel feels stiff or unresponsive, leading to difficulty in turning or maneuvering the vehicle.
- Power steering intermittently fails, making driving challenging and potentially dangerous.
- Dashboard displays a power steering warning light, alerting the driver of a system malfunction.
- Unusual noises coming from the steering column when turning, which may suggest mechanical issues.
Possible Causes
Most common causes of C0C59 (ordered by frequency):
- The most common cause is a faulty power steering motor, which can affect roughly 40% of cases. This motor may fail due to wear or electrical issues.
- A malfunctioning steering angle sensor is another common cause, often resulting in incorrect feedback to the PCM, accounting for about 30% of cases.
- Electrical issues such as corroded connectors or damaged wiring can also contribute to the C0C59 code. Regularly inspecting wiring and connections can help prevent this.
- Less common but serious causes include a failing PCM, which can disrupt various systems, including EPS functionalities.
- A rare cause might be software bugs in the vehicle's control modules, which may require a software update or reprogramming at a dealership.
C0C59 Repair Costs
Cost Breakdown by Repair Type
Power Steering Motor Replacement
Replacing the faulty power steering motor to restore EPS functionality.
- Total: $400 - $800
- Success rate: 90%
Steering Angle Sensor Replacement
Replacing the steering angle sensor to ensure accurate feedback to the PCM.
- Total: $150 - $300
- Success rate: 85%
Money-Saving Tips for C0C59
- 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 C0C59 Diagnosis Process
Follow these systematic steps to accurately diagnose C0C59. 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 power steering motor and angle sensor (20-30 minutes)
Step 3: Component testing - Use a multimeter or specific diagnostic tools to test the power steering motor and angle sensor (20-30 minutes).
Step 4: Step 4: System function test - Verify proper operation after repairs and clear codes using the GeekOBD APP (10-15 minutes)
Step 4: System function test - Verify proper operation after repairs and clear codes using the GeekOBD APP (10-15 minutes).
Step 5: Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success (15-20 minutes)
Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success (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: 2018 Ford Focus - Power Steering Motor Replacement
Vehicle: 2018 Ford Focus, 45,000 miles
Problem: Customer reported stiff steering and the check engine light illuminated.
Diagnosis: After scanning with the GeekOBD APP, the C0C59 code was retrieved, indicating a power steering issue. A visual inspection showed corroded wiring.
Solution: Replaced the power steering motor and repaired the damaged wiring.
Cost: $600 (includes parts and labor)
Result: After the repair, the steering was responsive, and the check engine light was cleared successfully.
Case Study 2: 2017 Honda Civic - Steering Angle Sensor Replacement
Vehicle: 2017 Honda Civic, 50,000 miles
Problem: Customer experienced intermittent steering issues and dashboard warning lights.
Diagnosis: DTC C0C59 was confirmed via OBD2 scan. The steering angle sensor was found to be faulty.
Solution: Replaced the steering angle sensor and recalibrated the system.
Cost: $250 (parts and labor)
Result: The vehicle's steering returned to normal functionality, and no warning lights remained.