C0555 - Understanding the Steering Control Code in 2010-2015 Chevrolet Malibu and Similar Models

Quick Answer

C0555 means: C0555 indicates a malfunction in the Steering Control Module, affecting power steering assistance.

Fix: Check and replace faulty components Cost: $300 - $800 Time: 90-180 minutes

Can I drive with C0555? Immediate attention is recommended to ensure safe vehicle operation.

Common Questions

What does C0555 mean and how does it affect my car?

C0555 indicates a problem with your vehicle's Steering Control Module, which regulates power steering assistance. When this code is present, you may experience heavy steering or a complete loss of steering assistance, which makes it difficult to control your vehicle safely. If left unchecked, this could lead to more severe steering issues and safety hazards.

What are the most common causes of C0555 and how much does it cost to fix?

Common causes of C0555 include a faulty Steering Control Module, damaged wiring, and issues with the vehicle's battery or charging system. Repair costs can range from $100 for wiring repairs to over $800 for a complete module replacement, depending on the specific issue.

Can I drive my car with C0555 or should I stop immediately?

You should avoid driving your vehicle if you see the C0555 code, as it indicates a potential loss of power steering. This can make steering difficult and pose a safety risk. It’s best to have the vehicle inspected as soon as possible.

How can I diagnose C0555 myself using GeekOBD APP?

You can use the GeekOBD APP to scan for codes and view freeze frame data, which helps you understand the conditions under which the C0555 code was triggered. Following the in-app instructions, you can also perform component tests to assess the functionality of the Steering Control Module.

What vehicles are most commonly affected by C0555?

C0555 is frequently reported in 2010-2015 Chevrolet Malibu and similar models across the Chevrolet lineup, including certain Pontiac and Buick vehicles. Be sure to check for any recalls or technical service bulletins related to your specific model.

How can I prevent C0555 from happening again?

To prevent the C0555 code from recurring, maintain your vehicle's electrical system, including regular battery checks, and visually inspect wiring and connectors for damage. Promptly address any steering issues and keep the Steering Control Module software updated.

What is C0555?

The Diagnostic Trouble Code (DTC) C0555 indicates a fault with the Steering Control Module (SCM). This code is commonly found in various Chevrolet models, particularly the 2010-2015 Chevrolet Malibu, but it may also appear in other vehicles with similar electronic power steering systems. When this code is triggered, it can lead to several issues, including a loss of power steering assistance, which can make steering feel heavy or unresponsive. The SCM is responsible for interpreting input from the steering wheel and adjusting the steering effort accordingly. If there's a malfunction, the vehicle's stability and handling can be compromised, posing a safety risk. Drivers may notice symptoms like the steering wheel feeling unusually stiff or the vehicle steering erratically. Ignoring this code can lead to further damage to the steering system or related components, potentially resulting in costly repairs. Therefore, addressing a C0555 code promptly is crucial for maintaining vehicle safety and performance.

System: C - Chassis (ABS, Steering, Suspension)

Symptoms

Common symptoms when C0555 is present:

  • The steering wheel feels excessively heavy, especially at low speeds, making it difficult to maneuver the vehicle.
  • The power steering warning light illuminates on the dashboard, indicating a problem with the steering system.
  • Drivers may experience intermittent loss of power steering assist, leading to unpredictable steering behavior.
  • Unusual noises, such as whining or grinding, may be heard when turning the steering wheel, suggesting potential mechanical issues.
  • A noticeable decrease in steering responsiveness, where the vehicle does not follow steering input accurately.

Possible Causes

Most common causes of C0555 (ordered by frequency):

  1. The most common cause of a C0555 code is a faulty Steering Control Module, with a likelihood of about 60%. This can stem from electrical issues, poor connections, or internal failure of the module.
  2. Another possibility is damaged or corroded wiring leading to the SCM, accounting for around 25% of cases. This can be caused by exposure to moisture or wear over time.
  3. Issues with the vehicle's battery or charging system can also trigger this code. A weak battery may not supply sufficient power to the SCM, leading to malfunctions. Regular battery checks can help prevent this.
  4. Less commonly, software glitches in the SCM may cause the code to appear, necessitating a software update or reprogramming to resolve the issue.
  5. In rare instances, physical damage to the steering column or associated components can lead to a C0555 code, often due to previous accidents or improper repairs.

C0555 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: 85%
Wiring Repair

Repairing or replacing damaged wiring leading to the SCM.

  • Total: $100 - $300
  • Success rate: 90%
Software Update

Reprogramming or updating the SCM software to resolve any glitches.

  • Total: $50 - $150
  • Success rate: 70%
Money-Saving Tips for C0555
  • 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 C0555 Diagnosis Process

Follow these systematic steps to accurately diagnose C0555. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Conduct an initial visual inspection

Step 1: Conduct an initial visual inspection. Check for damaged wiring, loose connections, or signs of corrosion around the SCM and its connectors (5-10 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 2: Step 2: Use the GeekOBD APP to perform an OBD2 scan, retrieving all active and stored codes, along with freeze frame data to better understand the context of the fault (10-15 minutes)

Step 2: Use the GeekOBD APP to perform an OBD2 scan, retrieving all active and stored codes, along with freeze frame data to better understand the context of the fault (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 3: Step 3: Test the Steering Control Module using a multimeter or specific diagnostic tools to check for proper voltage and ground signals (20-30 minutes)

Step 3: Test the Steering Control Module using a multimeter or specific diagnostic tools to check for proper voltage and ground signals (20-30 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 4: Step 4: Conduct a system function test after any repairs

Step 4: Conduct a system function test after any repairs. Clear the codes with the GeekOBD APP and ensure that the system operates correctly (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 5: Step 5: Road test the vehicle under various conditions to confirm that the steering response is normal and that the C0555 code does not return (15-20 minutes)

Step 5: Road test the vehicle under various conditions to confirm that the steering response is normal and that the C0555 code does not return (15-20 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.

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 on 2013 Chevrolet Malibu

Vehicle: 2013 Chevrolet Malibu, 75,000 miles

Problem: Customer reported heavy steering and illuminated power steering light.

Diagnosis: After scanning with the GeekOBD APP, C0555 was confirmed. A visual inspection revealed corrosion on the SCM connectors.

Solution: Replaced the Steering Control Module and repaired damaged wiring connections.

Cost: $600 (including parts and labor)

Result: The vehicle's steering was restored to normal operation, and the C0555 code did not return.

Case Study 2: Wiring Repair on 2012 Buick Regal

Vehicle: 2012 Buick Regal, 85,000 miles

Problem: Customer experienced intermittent loss of power steering and dashboard warning light.

Diagnosis: DTC C0555 was retrieved using the GeekOBD APP, leading to a thorough inspection of the wiring harness.

Solution: Damaged wiring was repaired, and connections were cleaned and secured.

Cost: $150 (labor only)

Result: The issue was resolved, and the customer reported no further problems with steering assist.

Diagnose C0555

Use GeekOBD APP for professional diagnosis!

  • Real-time data monitoring
  • Advanced diagnostic features
  • Step-by-step repair guidance
  • Professional-grade analysis
Download GeekOBD APP Get MOBD Adapter

Code Information

Code: C0555
System: Chassis (ABS, Steering, Suspension)
Severity: HIGH
Category: Chassis Codes