C03C3 - Understanding the C03C3 Code in 2015-2020 Ford Explorer and Dodge Durango

Quick Answer

C03C3 means: C03C3 indicates a communication issue with the rear suspension control module.

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

Can I drive with C03C3? It's recommended to diagnose and repair this issue as soon as possible to prevent further damage.

Common Questions

What does C03C3 mean and how does it affect my car?

The C03C3 code indicates a problem with the communication between the vehicle's control modules, specifically related to the rear suspension. This can lead to a rough ride, improper handling, and potential safety issues. It's essential to address this promptly to maintain your vehicle's performance.

What are the most common causes of C03C3 and how much does it cost to fix?

Common causes of C03C3 include a faulty rear suspension control module, damaged wiring, or software glitches. Repair costs can range from $150 for wiring repairs to $800 for module replacement, depending on the issue.

Can I drive my car with C03C3 or should I stop immediately?

While you may still drive your vehicle, it's advisable to avoid long trips or heavy loads until the issue is resolved. Ignoring the code could lead to further damage and safety risks.

How can I diagnose C03C3 myself using GeekOBD APP?

To diagnose the C03C3 code, connect the GeekOBD APP to your vehicle's OBD2 port, scan for trouble codes, and review the freeze frame data. Check for any related codes that may provide additional context to the issue.

What vehicles are most commonly affected by C03C3?

The C03C3 code is frequently seen in 2015-2020 Ford Explorer and Dodge Durango models, particularly those equipped with electronic rear suspension systems. These vehicles may have recalls or technical service bulletins (TSBs) addressing related issues.

How can I prevent C03C3 from happening again?

To prevent C03C3 from recurring, ensure regular maintenance of your suspension system, inspect wiring for wear or damage, and avoid aftermarket modifications that may interfere with factory settings.

What is C03C3?

The diagnostic trouble code (DTC) C03C3 indicates a malfunction in the vehicle's powertrain control module related to communication issues with the rear suspension control module. This code is most commonly associated with vehicles such as the 2015-2020 Ford Explorer and Dodge Durango, where the rear suspension is electronically controlled. When the C03C3 code is triggered, it means that the powertrain control module (PCM) has detected a fault in the signal from the rear suspension system. This could result in various performance issues, including a rough ride, improper handling, and potential safety concerns if the system is unable to correct suspension settings. Drivers may notice that their vehicle’s ride height may not adjust as needed, leading to decreased ride comfort. Ignoring this code could lead to further damage to the suspension system and may affect the vehicle's overall performance and safety. Therefore, addressing this issue promptly is crucial for maintaining vehicle integrity and ensuring a safe driving experience.

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

Symptoms

Common symptoms when C03C3 is present:

  • Check engine light remains illuminated, indicating a persistent issue that requires attention.
  • Vehicle experiences a rough ride, with noticeable jolts or bumps during travel, which can be uncomfortable for passengers.
  • Suspension height may not adjust properly, leading to an unbalanced vehicle, especially when loaded, which can affect handling.
  • Increased tire wear due to improper suspension settings, leading to potential safety hazards over time.
  • Driver notices a decrease in fuel efficiency, possibly due to the vehicle’s inability to maintain optimal aerodynamics.

Possible Causes

Most common causes of C03C3 (ordered by frequency):

  1. The most common cause of C03C3 is a faulty rear suspension control module, with a likelihood of around 40%. This can occur due to corrosion, electrical issues, or internal module failure.
  2. Another frequent culprit is damaged wiring or connectors in the suspension system, which can cause intermittent communication failures. This accounts for about 30% of cases.
  3. A third cause may be software glitches within the vehicle's control modules, which can sometimes be resolved with a simple software update from the dealership.
  4. Less common but serious causes include physical damage to the suspension systems, which may require extensive repairs or parts replacement.
  5. A rare yet possible cause could be interference from aftermarket modifications, such as suspension lifts or modifications that disrupt factory settings.

C03C3 Repair Costs

Cost Breakdown by Repair Type

Rear Suspension Control Module Replacement

Replacing the faulty rear suspension control module to restore proper communication and functionality.

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

Repairing damaged wiring or connectors in the suspension system to restore signal integrity.

  • Total: $150 - $300
  • Success rate: 90%
Money-Saving Tips for C03C3
  • 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 C03C3 Diagnosis Process

Follow these systematic steps to accurately diagnose C03C3. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Conduct an initial visual inspection to look for any damaged wiring, loose connections, or signs of corrosion in the rear suspension area (5-10 minutes)

Step 1: Conduct an initial visual inspection to look for any damaged wiring, loose connections, or signs of corrosion in the rear suspension area (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 a diagnostic tool like the GeekOBD APP to scan the vehicle and retrieve all stored codes along with freeze frame data to understand the context of the failure (10-15 minutes)

Step 2: Use a diagnostic tool like the GeekOBD APP to scan the vehicle and retrieve all stored codes along with freeze frame data to understand the context of the failure (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: Perform component testing on the rear suspension control module and associated wiring using a multimeter to check for continuity and proper voltage (20-30 minutes)

Step 3: Perform component testing on the rear suspension control module and associated wiring using a multimeter to check for continuity and proper voltage (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: If repairs are made, conduct a system function test to ensure that the rear suspension is operating correctly before clearing the codes (10-15 minutes)

Step 4: If repairs are made, conduct a system function test to ensure that the rear suspension is operating correctly before clearing the codes (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: Carry out a road test to verify that the suspension operates as intended under different driving conditions, confirming that the repair was successful (15-20 minutes)

Step 5: Carry out a road test to verify that the suspension operates as intended under different driving conditions, confirming that the repair was successful (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: Ford Explorer C03C3 Repair Case Study

Vehicle: 2017 Ford Explorer, 60,000 miles

Problem: The customer complained of a rough ride and a persistent check engine light.

Diagnosis: Using the GeekOBD APP, the technician identified the C03C3 code and performed a visual inspection. The rear suspension control module showed signs of corrosion.

Solution: The technician replaced the rear suspension control module and repaired the wiring harness connections.

Cost: $650 (module: $500, labor: $150)

Result: After the repair, the suspension operated smoothly, and the check engine light was cleared, restoring ride quality.

Case Study 2: Dodge Durango C03C3 Diagnostic and Repair

Vehicle: 2018 Dodge Durango, 45,000 miles

Problem: Owner reported that the vehicle's ride height was inconsistent and the check engine light illuminated.

Diagnosis: The GeekOBD APP revealed the C03C3 code. Further diagnostics showed a damaged wiring connector in the rear suspension system.

Solution: Replaced the damaged wiring connector and performed a system function test.

Cost: $200 (connector: $50, labor: $150)

Result: The vehicle's suspension height adjusted correctly post-repair, and the check engine light turned off.

Diagnose C03C3

Use GeekOBD APP for professional diagnosis!

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  • Professional-grade analysis
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Code Information

Code: C03C3
System: Chassis (ABS, Steering, Suspension)
Severity: HIGH
Category: Chassis Codes