How to Reset the CCV Filter on a 6.7 Cummins: Step-by-Step Guide

If you own a Ram truck powered by the legendary 6.7 Cummins diesel engine, keeping your maintenance schedule on point is crucial. One important but often overlooked component is the Crankcase Ventilation (CCV) filter. Whether you're driving a newer model or maintaining a 2015 Cummins CCV filter, replacing and resetting the system is essential to clear alerts and ensure your engine management system functions properly.

In this guide, we’ll walk you through what the CCV filter does, why the reset is important, and exactly how to reset the CCV filter on your 6.7 Cummins.

What Is a CCV Filter and Why Is It Important?

The Crankcase Ventilation (CCV) filter is part of the emission control system. It captures oil vapors and contaminants from the engine’s blow-by gases before they’re re-routed back into the intake system. Over time, this filter gets clogged, reducing its effectiveness and causing the truck to display a "Service CCV Filter" warning. Using a quality replacement like the Mopar crankcase filter 6.7 Cummins helps maintain optimal engine performance and ensures compatibility with OEM specifications.

Ignoring this can lead to increased crankcase pressure, reduced engine efficiency, and even oil leaks. That’s why timely replacement and resetting of the CCV filter indicator is critical.

When Should You Replace and Reset the CCV Filter?

Cummins recommends replacing the CCV filter approximately every 67,500 miles, although this can vary depending on driving conditions. After replacing it, you’ll need to reset the system to:

• Clear the service message
  
  

• Allow the ECM (Engine Control Module) to track the new filter’s lifespan
  
  

• Maintain accurate diagnostics and performance

Tools You’ll Need

Before you begin the reset process, make sure you have the following:

• Your vehicle key (or key fob)
  
  

• Access to your truck’s ignition system
  
  

• No active DTC (Diagnostic Trouble Codes) unless resolved
  
  

Note: This guide applies to most 2013–2024 Ram 2500, 3500, 4500, and 5500 trucks with the 6.7L Cummins engine.

How to Reset the CCV Filter on a 6.7 Cummins

Here’s a simple, step-by-step guide to reset the CCV filter warning:

Step 1: Turn the Ignition to the 'Run' Position

Insert the key into the ignition and turn it to the 'Run' position—do not start the engine. You’ll know you’re in the correct position when dashboard lights and messages appear.

Step 2: Press the Accelerator Three Times

Within 10 seconds, press the accelerator pedal fully down and release it three times. Make sure the pedal is pressed all the way to the floor and released each time.

Step 3: Wait for Confirmation

Wait for a few seconds. The "Service CCV Filter" message should disappear from the dashboard. If the message does not clear, repeat the process or check for underlying issues.

Common Mistakes to Avoid

• Not turning the ignition to the correct 'Run' position
  
  

• Pressing the accelerator too slowly or too quickly
  
  

• Attempting the reset with unresolved engine fault codes
  
  

If the reset still doesn’t work, a diagnostic tool like a scan tool or OBD-II reader may be required, or you may need to disconnect the battery for a hard reset—though that should be a last resort.

Maintaining Your 6.7 Cummins CCV System

A clean and properly functioning CCV filter system helps reduce oil contamination, minimizes emissions, and protects your turbocharger from excess oil buildup. Here are some quick maintenance tips:

• Check your filter at least every 60,000 miles
  
  

• Replace sooner if driving in dusty or extreme conditions
  
  

• Use OEM or high-quality aftermarket filters for reliability
  
  

• Log each filter change to keep track of maintenance intervals

Final Thoughts

Resetting the CCV filter on your 6.7 Cummins is a quick task that can save you from performance issues down the road. Whether you're a DIY diesel enthusiast or a professional mechanic, staying on top of your CCV system ensures your Cummins-powered truck continues running smoothly.

By following these simple reset steps and understanding how your filter works, you reinforce your role as a responsible truck owner who values performance, longevity, and clean operation.

Frequently Asked Questions (FAQs)

1. What happens if I don’t reset the CCV filter on a 6.7 Cummins?

The truck will continue to display a "Service CCV Filter" message, which can interfere with diagnostic systems and prevent accurate maintenance tracking.

2. Can I reset the CCV filter without replacing it?

While technically possible, it’s not recommended. Resetting without replacement can mislead the ECM and compromise engine protection.

3. How do I know if my CCV filter is clogged?

Symptoms include increased oil consumption, visible smoke, and the service warning light on your dashboard.

4. Can a dirty CCV filter affect fuel economy?

Yes. A clogged filter can increase crankcase pressure, reducing combustion efficiency and potentially impacting MPG performance.

5. Is it safe to use aftermarket CCV filters instead of OEM?

Aftermarket filters can be safe if sourced from reputable brands. However, always ensure they meet OEM specifications to protect your engine.