Quick Answer
C0653 means: DTC C0653 signifies a malfunction in the Power Steering Control Module, affecting the vehicle's steering performance.
Can I drive with C0653? Immediate attention is recommended to prevent safety hazards.
Common Questions
What does C0653 mean and how does it affect my car?
DTC C0653 indicates a problem with the Power Steering Control Module, which can lead to steering difficulties and may compromise vehicle handling. It's crucial to address this code promptly to ensure your safety and maintain optimal vehicle performance.
What are the most common causes of C0653 and how much does it cost to fix?
Common causes include a faulty Power Steering Control Module, damaged wiring, and a malfunctioning steering angle sensor. Repair costs can range from $100 for minor wiring fixes to upwards of $600 for a full module replacement.
Can I drive my car with C0653 or should I stop immediately?
Driving with DTC C0653 is risky as it can lead to steering failure. If you notice symptoms like hard steering or unusual noises, it's advised to stop driving and seek immediate diagnostic assistance.
How can I diagnose C0653 myself using GeekOBD APP?
Using the GeekOBD APP, you can connect to your vehicle's OBD2 port, retrieve the DTC C0653 code, and view related freeze frame data. This information helps you understand the conditions under which the code was triggered, aiding in diagnostics.
What vehicles are most commonly affected by C0653?
DTC C0653 is frequently reported in 2015-2020 Chevrolet Silverado and GMC Sierra models. While other makes may also experience this code, these models are particularly prone due to their steering system configurations.
How can I prevent C0653 from happening again?
Regular maintenance, including inspections of the power steering system and addressing any signs of wear or damage early, can help prevent the recurrence of C0653. Additionally, ensuring all electrical connections are clean and secure is crucial.
What is C0653?
DTC C0653 refers to a specific diagnostic trouble code that indicates a malfunction within the Power Steering Control Module (PSCM) of a vehicle, particularly affecting models like the 2015-2020 Chevrolet Silverado. This code suggests that the PSCM is not communicating correctly with the Engine Control Module (ECM), leading to potential issues with the steering system. When this code is triggered, drivers may experience a range of symptoms, including difficulty in steering, an illuminated check engine light, and in some cases, the power steering may completely fail. The implications of this code can be serious; if left unaddressed, it can lead to a complete loss of steering control, posing a significant safety risk. It’s crucial for vehicle owners to understand that this issue can also affect other systems, such as traction control and stability control, as they often rely on accurate data from the PSCM. Identifying and rectifying the underlying issue promptly can help prevent further complications such as increased repair costs and more extensive damage to the vehicle's electrical systems. Diagnosing the root cause of C0653 typically involves thorough inspections and the use of specialized tools like the GeekOBD APP for accurate readings and troubleshooting.
System: C - Chassis (ABS, Steering, Suspension)
Symptoms
Common symptoms when C0653 is present:
- The check engine light remains illuminated, indicating a fault that needs addressing.
- Steering becomes increasingly difficult, especially at low speeds, making driving challenging and unsafe.
- Drivers may notice unusual noises from the steering column, which could indicate mechanical or electrical issues.
- Intermittent loss of power steering assist occurs, making it hard to maneuver the vehicle in tight spaces.
- There may be a sudden increase in steering resistance, particularly when turning or during parking maneuvers.
Possible Causes
Most common causes of C0653 (ordered by frequency):
- The most common cause of DTC C0653 is a faulty Power Steering Control Module, which has a likelihood of about 60%. This can happen due to manufacturing defects or wear over time.
- Another frequent cause is damaged wiring or poor connections within the steering system, contributing to approximately 25% of cases. This can result from corrosion or physical damage.
- A malfunctioning steering angle sensor can also trigger this code, although it's less common. Regular inspections can help prevent this by ensuring that all sensors are functioning correctly.
- Less common but serious causes include a failed ECM, which may not be able to communicate with the PSCM, leading to significant control issues.
- In rare instances, software glitches in the vehicle's onboard systems can cause erroneous codes, potentially leading to unnecessary repairs.
C0653 Repair Costs
Cost Breakdown by Repair Type
Power Steering Control Module Replacement
Replacing the faulty PSCM with a new unit, which often resolves the C0653 code.
- Total: $300 - $600
- Success rate: 95%
Wiring Repair
Repairing damaged wiring or connections to restore proper communication.
- Total: $100 - $250
- Success rate: 90%
Steering Angle Sensor Replacement
Replacing the steering angle sensor if it's found to be faulty during diagnostics.
- Total: $150 - $300
- Success rate: 85%
Money-Saving Tips for C0653
- 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 C0653 Diagnosis Process
Follow these systematic steps to accurately diagnose C0653. Each step builds on the previous one to ensure accurate diagnosis.
Step 1: Step 1
Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion (5-10 minutes)
Step 2: 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 3: Step 3
Step 3: Component testing - Use a multimeter or specific diagnostic tools to test suspected components, focusing on the PSCM and related wiring (20-30 minutes)
Step 4: Step 4
Step 4: System function test - Verify proper operation after repairs and clear codes to see if they return (10-15 minutes)
Step 5: Step 5
Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and assess steering performance (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 Control Module Failure in a 2017 Chevrolet Silverado
Vehicle: 2017 Chevrolet Silverado, 45,000 miles
Problem: The customer reported difficulty steering, especially at low speeds, and noticed the check engine light was on.
Diagnosis: After scanning with the GeekOBD APP, DTC C0653 was confirmed. A visual inspection revealed corroded connections in the wiring harness.
Solution: Replaced the corroded wiring connections and the Power Steering Control Module to restore functionality.
Cost: $450 (module $350, labor $100)
Result: The repair resolved the steering issues, and the check engine light was cleared.
Case Study 2: Wiring Repair on a 2018 GMC Sierra
Vehicle: 2018 GMC Sierra, 30,000 miles
Problem: Customer experienced intermittent loss of power steering assist and received a C0653 code.
Diagnosis: Diagnostic tests confirmed a faulty connection in the wiring harness leading to the PSCM.
Solution: The damaged wiring was repaired, which restored communication with the PSCM.
Cost: $150 (labor included)
Result: Post-repair, the vehicle operated normally without any further codes.