Description
Activated carbon filter for Citroën C4 and Peugeot 307.
This activated carbon (charcoal) filter, listed under reference 1502F9, is designed for Stellantis vehicles Citroën C4 and Peugeot 307. It uses high-quality activated carbon media to reduce odors and adsorb unwanted gaseous pollutants, improving in-cabin air quality and supporting proper operation of evaporative emission control components where applicable. Suitable for professional workshops and competent DIY mechanics looking for a direct-replacement part that matches OE reference numbers.
Technical Information
- Manufacturer: Stellantis
- Model: Citroën C4; Peugeot 307
- Product Codes: 1502F9
- Other Numbers: NFP
Function
The activated carbon media traps and adsorbs odors, volatile organic compounds (VOCs) and fuel vapors. In cabin air applications it reduces unpleasant smells and improves passenger comfort. In evaporative emissions systems the carbon element captures fuel vapors and prevents their release into the atmosphere until they are purged and burned by the engine. The result is better air quality, reduced odor perception and compliance with emission control functions where fitted.
Typical Service Life
Service life depends on driving conditions and environment. As a practical guideline, inspect the filter at routine service intervals and consider replacement approximately every 12–24 months or 15,000–30,000 km. Replace sooner if you notice persistent odors, reduced HVAC airflow or visible contamination. Exposure to heavy pollution, dusty roads or repeated fuel system faults can shorten the interval.
Replacement Procedure (Overview)
Suitable for experienced mechanics and capable DIYers. Exact access location may differ by model and production year; the filter can be located in a cabin filter housing (often behind the glovebox) or as part of the evaporative canister assembly. General replacement steps:
- Park the vehicle on a level surface and switch off the ignition. Allow the vehicle to cool if needed.
- Gather basic tools: screwdrivers, trim tools, a flashlight and gloves. For under-car installations you may need ramps or a lift.
- Open or remove the access panel or glovebox to reach the filter housing. On underbody canisters, support the vehicle securely before working underneath.
- Remove fasteners or clips and carefully extract the old filter element. Note the orientation of the element and any seals.
- Inspect the housing for dirt, water or damage. Clean the seating area and replace any O-rings or seals if required.
- Install the new filter in the correct orientation, ensure proper seating and reassemble the housing with original fasteners.
- Start the engine and check for unusual odors or system warnings. Verify there are no vacuum leaks if the filter is part of the EVAP system.
Mounting Recommendations
- Use appropriate hand tools and avoid over-tightening plastic fasteners to prevent damage.
- Replace seals or gaskets when they show signs of wear to maintain a tight seal.
- Clean the housing before fitting the new element to prevent premature re-soiling.
- Follow vehicle-specific access procedures and safety measures (vehicle supported correctly, battery disconnected if working near electrical components when required).
Why This Part Most Commonly Fails
The most frequent causes of failure are carbon saturation and clogging. Over time the activated carbon becomes loaded with odors, hydrocarbons and particulate contamination, reducing adsorption capacity. Physical contamination (dust, leaves, oil), water ingress and damage to the housing or seals also compromise performance. In EVAP configurations, related faults such as a stuck purge valve or fuel system leaks can accelerate carbon saturation.
Choose this activated carbon filter when you need a direct-replacement element for Citroën C4 and Peugeot 307 models that matches OE reference 1502F9 — a practical choice for workshops and DIYers aiming to restore air quality and emission control function quickly and reliably.
