Description
Fuel vapor canister for Citroën and Peugeot vehicles
Overview
This Active Charcoal Filter (Evaporative Emissions Canister) is an OEM‑style replacement part for Citroën and Peugeot models. It captures fuel vapors from the tank and stores them in activated carbon until the engine control system purges them into the intake for combustion. Commonly referenced by part numbers 1502H9 and 9683409180, this canister is suitable for workshop fitment and DIY repairs on compatible Citroën and Peugeot cars.
Why This Part Matters
The charcoal canister is a key component of the EVAP (evaporative emissions) system. A healthy canister prevents hydrocarbon emissions, avoids fuel odor, helps the vehicle pass emissions tests, and contributes to correct engine management. Replacing a faulty canister restores proper EVAP operation and removes related engine fault codes.
Symptoms Of A Faulty Canister
- Illuminated Check Engine Light, often with EVAP‑related fault codes (P0440, P0441, P0442, etc.).
- Strong Fuel Odor Around The Rear Of The Vehicle Or In The Cabin.
- Rough Idle, Hesitation, Or Reduced Fuel Economy When EVAP Vapors Are Not Properly Purged.
- Failed Emissions Test Due To EVAP Leaks Or System Malfunction.
Common Causes Of Failure
Canisters typically fail because of contamination or physical damage: saturation with liquid fuel (often from overfilling the tank), ingress of water or debris, degraded or cracked plastic housings, or clogged internal charcoal pellets. Faults are frequently aggravated by brittle or leaking EVAP hoses, failed purge control valves, or blocked vent valves.
How It Is Replaced
Replacement is straightforward for a competent mechanic or experienced DIYer. Typical steps:
- Park On A Level Surface, Apply Handbrake And Work With Engine Off.
- Locate The Canister (Usually Mounted Near The Fuel Tank Or Rear Wheel Arch).
- Support The Vehicle Securely If Required To Access The Unit.
- Carefully Disconnect EVAP Hoses And Electrical Connectors (Note Positions For Reassembly).
- Remove Mounting Bolts Or Clips And Extract The Canister.
- Install New Unit, Reconnect Hoses And Connectors, Ensure All Clamps And Seals Are Tight.
- Clear EVAP Fault Codes With An OBD‑II Scanner And Perform A System Check Or Smoke Test If Available.
Recommended tools: Ratchet set, hose pliers, screwdrivers, jack and stands (if needed), OBD‑II scanner or diagnostic tool able to read EVAP codes. Inspect and replace any brittle hoses, check valves, and purge solenoid while performing the replacement.
Installation Recommendations
- Replace Any Worn Or Brittle EVAP Hoses And Hose Clamps During Installation To Prevent Future Leaks.
- Ensure Proper Orientation And Secure Mounting To Avoid Rubbing Or Stress On Pipes.
- Use A Diagnostic Tool To Clear Codes And Run An EVAP System Test After Fitment.
- When Replacing The Canister, Check The Purge Valve And Vent Valve Function To Eliminate Related Faults.
- Always Wear Proper PPE And Follow Safe Lifting Procedures When Working Under The Vehicle.
Technical Information
- Manufacturer: Stellantis (Citroën, Peugeot)
- Model: Citroën C4; Peugeot 307
- Product Codes: 1502H9, 9683409180
- Additional Numbers: OEM Reference 9683409180 / Internal Code 1502H9
Compatibility And Notes
This canister is listed for common Citroën and Peugeot applications such as Citroën C4 and Peugeot 307 according to the supplied references. Always verify fitment by matching manufacturer part numbers listed on the unit or vehicle documentation. The part numbers 1502H9 and 9683409180 are commonly used when searching the catalog or ordering replacement parts.
Why Replace Instead Of Repair
Charcoal canisters are generally sealed units; once the internal charcoal is saturated or the housing is cracked, restoration is not reliable. Replacing the complete canister ensures long‑term EVAP function and avoids repeated visits due to recurring faults. While associated valves and hoses can sometimes be serviced separately, a compromised canister should be replaced.
Final Advice For Mechanics And DIYers
For professional workshops: Keep the part numbers handy (1502H9, 9683409180) to speed up ordering. For DIY customers: follow the replacement checklist above, inspect related components, and clear EVAP codes after installation. Proper diagnosis (including smoke testing for leaks) prevents unnecessary part replacements and ensures a lasting repair.
