C0656 - Understanding the ABS Control Module Code in Vehicles Like the 2010-2015 Chevrolet Equinox

Quick Answer

C0656 means: C0656 indicates a malfunction in the ABS control module, affecting braking performance.

Fix: Check and replace faulty components Cost: $400 - $800 Time: 90-180 minutes

Can I drive with C0656? Immediate attention is required to ensure safe vehicle operation.

Common Questions

What does C0656 mean and how does it affect my car?

C0656 indicates a problem with the ABS control module, which is crucial for maintaining safe braking performance. If not addressed, it can cause brake failure, leading to dangerous driving conditions.

What are the most common causes of C0656 and how much does it cost to fix?

Common causes include a faulty ABS module, damaged wiring, or malfunctioning wheel speed sensors. Repair costs can range from $100 for wiring repairs to $800 for module replacement, depending on the severity of the issue.

Can I drive my car with C0656 or should I stop immediately?

It is not safe to drive with C0656 as it can compromise your braking system. It is crucial to have your vehicle inspected promptly to prevent potential accidents.

How can I diagnose C0656 myself using GeekOBD APP?

To diagnose C0656 using the GeekOBD APP, connect the app to your vehicle's OBD2 port, retrieve the diagnostic trouble codes, and check the freeze frame data for insights into when the issue occurs.

What vehicles are most commonly affected by C0656?

Commonly affected vehicles include models from Chevrolet, particularly the 2010-2015 Equinox, and other GM vehicles that share similar ABS systems. It's advisable to check for any recalls related to ABS issues.

How can I prevent C0656 from happening again?

Regular maintenance, including checking electrical connections, ensuring brake fluid is clean, and having the ABS system inspected periodically, can help prevent the recurrence of C0656.

What is C0656?

The diagnostic trouble code (DTC) C0656 indicates a malfunction related to the Anti-lock Braking System (ABS) control module. This code is often triggered when the ABS control module detects an internal fault, which can affect the vehicle's braking performance and safety. In vehicles like the 2010-2015 Chevrolet Equinox, the ABS system plays a crucial role in preventing wheel lock-up during hard braking, allowing for better control and stability. When the C0656 code appears, it can result in the ABS warning light illuminating on the dashboard, signaling to the driver that there may be an issue with the braking system. Common symptoms associated with this code include a lack of response from the ABS when engaged, a spongy brake pedal feel, or even a complete failure of the ABS system if the fault is severe. Ignoring this trouble code can lead to longer stopping distances and increased risk of accidents. Therefore, addressing C0656 promptly is vital for maintaining optimal vehicle safety and performance. It's essential to consult a professional technician who can perform a thorough diagnostic check to pinpoint the exact cause of the fault, as it may stem from various issues including wiring problems, module failure, or sensor malfunctions.

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

Symptoms

Common symptoms when C0656 is present:

  • ABS warning light stays illuminated on the dashboard, indicating a potential issue with the braking system.
  • Brake pedal feels spongy or unresponsive, leading to concerns about braking effectiveness.
  • Inconsistent ABS engagement during hard braking, which may result in wheel lock-up and loss of control.
  • Increased stopping distance when applying brakes, which can be dangerous in emergency situations.
  • Occasional loss of traction control functionality, affecting overall vehicle handling and stability.

Possible Causes

Most common causes of C0656 (ordered by frequency):

  1. The most common cause of C0656 is a faulty ABS control module, with a probability of about 60%. This can happen due to manufacturing defects or wear and tear over time.
  2. A second cause could be damaged wiring or poor connections in the ABS system, which may account for around 25% of cases. Corrosion or frayed wires can lead to intermittent faults.
  3. A third potential cause is a malfunctioning wheel speed sensor, crucial for ABS operation. Regular maintenance checks can prevent this issue by ensuring sensors are clean and properly connected.
  4. A less common but serious cause could be fluid contamination in the ABS module, affecting its performance and leading to premature failure.
  5. A rare cause might be software issues in the ABS control module, requiring a reprogramming or update to resolve the fault.

C0656 Repair Costs

Cost Breakdown by Repair Type

ABS Control Module Replacement

Replacing the faulty ABS control module to restore braking functionality.

  • Total: $400 - $800
  • Success rate: 85%
Wiring Repair

Repairing damaged wiring or faulty connections to the ABS components.

  • Total: $100 - $300
  • Success rate: 75%
Wheel Speed Sensor Replacement

Replacing malfunctioning wheel speed sensors that may be causing the C0656 code.

  • Total: $150 - $250
  • Success rate: 90%
Money-Saving Tips for C0656
  • 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 C0656 Diagnosis Process

Follow these systematic steps to accurately diagnose C0656. 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, which should take about 5-10 minutes

Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion, which should take about 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: OBD2 scan with GeekOBD APP - Use the app to retrieve all diagnostic trouble codes and freeze frame data, which can provide context for the fault (10-15 minutes)

Step 2: OBD2 scan with GeekOBD APP - Use the app to retrieve all diagnostic trouble codes and freeze frame data, which can provide context for 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: Component testing - Utilize a multimeter to test suspected components, like the ABS control module and wheel speed sensors, which may take 20-30 minutes

Step 3: Component testing - Utilize a multimeter to test suspected components, like the ABS control module and wheel speed sensors, which may take 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: System function test - After any repairs, verify the proper operation of the ABS system and clear any codes using the GeekOBD APP (10-15 minutes)

Step 4: System function test - After any repairs, verify the proper operation of the ABS system and clear any codes using the GeekOBD APP (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 verification - Drive the vehicle under various conditions to confirm that the ABS system is functioning correctly and that no warning lights reappear (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to confirm that the ABS system is functioning correctly and that no warning lights reappear (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: Resolving C0656 in a 2012 Chevrolet Equinox

Vehicle: 2012 Chevrolet Equinox, 75,000 miles

Problem: Customer reported that the ABS light was on, and braking felt less responsive.

Diagnosis: Upon scanning, the C0656 code was confirmed. A visual inspection revealed corroded wiring leading to the ABS module.

Solution: Replaced the damaged wiring harness and reprogrammed the ABS control module.

Cost: $550 (including parts and labor)

Result: After the repair, the ABS light turned off, and the customer reported improved braking performance.

Case Study 2: C0656 Fix in a 2014 Chevrolet Malibu

Vehicle: 2014 Chevrolet Malibu, 60,000 miles

Problem: ABS light illuminated, and the driver felt the brakes engage inconsistently.

Diagnosis: Diagnostic scanning indicated C0656. Testing revealed a faulty wheel speed sensor.

Solution: Replaced the faulty wheel speed sensor and cleared the codes.

Cost: $200 (parts and labor)

Result: The issue was resolved, and the ABS system functioned correctly after the repair.

Diagnose C0656

Use GeekOBD APP for professional diagnosis!

  • Real-time data monitoring
  • Advanced diagnostic features
  • Step-by-step repair guidance
  • Professional-grade analysis
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Code Information

Code: C0656
System: Chassis (ABS, Steering, Suspension)
Severity: HIGH
Category: Chassis Codes