Date Published: February 10, 2026 | Last Modified: 1 hour ago | 4 minute read | Verified by Mitchell Bazinet at Redwater Dodge

Understanding the 6.7L Cummins "Perform Service" Indicator

What does the perform service message mean?

Mitch at Redwater Dodge hears this question constantly. The good news? Your truck isn't broken. The better news? Understanding this message is the key to protecting your engine’s long-term health and avoiding some very messy (and expensive) oil leaks.

What Does "Perform Service" Actually Mean?

When this message populates—typically around every 100,000 kilometers (approx. 62,000 miles)—your truck is specifically asking for a new Crankcase Ventilation (CCV) Filter.

Think of the CCV filter as the "lungs" of your engine's crankcase. In a high-performance diesel engine like the 6.7L Cummins, combustion gases can sometimes bypass the pistons. The CCV filter’s job is to catch oil mist and pollutants, ensuring that only clean air is recirculated. Over time, this filter becomes clogged with soot and oil. When it hits that 100k mark, the onboard computer triggers the "Performed Service" alert to let you know the filter has reached its capacity.

Is This the Same as a Check Engine Light?

This is the most common misconception we encounter. The short answer is: No.

The "Performed Service" Light: This is a scheduled maintenance reminder. It is proactive. It functions similarly to a "Low Washer Fluid" or "Change Oil" light—it’s telling you that a consumable part has reached the end of its lifespan.

The Check Engine Light (MIL): This indicates an active fault or a failure within the engine's emission or mechanical systems.

While the "Performed Service" message isn't an emergency, it shouldn't be treated as a suggestion.

Can You Keep Driving with the Message On?

Technically, yes. Your truck won’t suddenly shut down or enter "limp mode" the second the light turns on. However, delaying this service is a gamble you don't want to take.

When a CCV filter is fully plugged, it causes excessive crankcase pressure. That pressure has to go somewhere. Usually, it tries to escape through your engine's oil seals. If you wait too long, you might find yourself dealing with significant oil leaks that cost far more to repair than a simple filter swap. We recommend having the CCV filter replaced sooner rather than later to keep those seals tight and your driveway clean.

The "Secret" Reset Procedure

One of the most frequent frustrations for Ram owners is that the message doesn't always disappear just because you changed the filter. The reset procedure for the 6.7L Cummins is, frankly, a bit of a rhythmic exercise.

How to reset the "Performed Service" message:

1. Turn the ignition to the RUN position (do not start the engine).
2. Depress the brake pedal three times in quick succession.
3. Depress the gas pedal three times in quick succession.
4. Turn the ignition off.

Don't be discouraged if it doesn't work the first time! As our team at Redwater Dodge can tell you, you’ll likely have to redo this sequence several times before the computer finally accepts the reset. It requires a bit of patience and specific timing.

Additional Questions & Answers

Q1. Where is the CCV filter located on the 6.7L Cummins?

A1. It is located on top of the engine valve cover. It is housed under a rectangular plastic cover that is easily accessible once the engine beauty cover is removed.

Q2. Can I change the CCV filter myself?

A2. Yes, it is a task many DIY-inclined owners handle. However, ensuring the seal is seated correctly is vital to prevent oil leaks on top of the engine. If you aren't comfortable working around the fuel lines and sensors, our service department can handle it quickly.

Q3. Does the CCV filter affect my fuel mileage?

A3. While it may not directly impact MPG as significantly as a fuel filter or air filter, a clogged CCV system can cause the engine to run less efficiently due to increased internal pressure and poor air recirculation.

Q4. Why does the reset procedure involve the pedals?
A4. This is a "handshake" protocol programmed into the ECM (Engine Control Module). It’s designed to ensure the reset is intentional rather than an accidental button press in the menu.