Description
Evaporative Emissions Canister For Citroën And Peugeot Vehicles.
Product Overview
Active carbon/charcoal canister designed to capture and store fuel vapours from the fuel tank and EVAP system on selected Citroën and Peugeot models. This component prevents hydrocarbon emissions from escaping to atmosphere and works together with the purge valve and EVAP hoses to route stored vapours back to the engine for combustion. Frequently searched under part numbers 1502H9 and 9683409180.
Why This Part Matters
The charcoal canister is a passive but essential part of the evaporative emissions control system (EVAP). A healthy canister keeps fuel vapours contained, reduces unpleasant fuel odours, and prevents EVAP system fault codes (for example P0440, P0441, P0442, P0443, P0446) and related drivability issues. Replacing a failed canister restores correct EVAP function and helps the vehicle pass emissions inspections.
Fitment And Common Applications
Common applications include Citroën C4 and Peugeot 307 models. Many technicians and DIYers locate compatible parts by product code (1502H9, 9683409180). Always confirm fitment by matching the part number and physical mounting location on the vehicle.
Signs Of Failure
- Illuminated Check Engine Light With EVAP Codes (e.g. P0440, P0441, P0442).
- Strong Fuel Smell Around The Vehicle Or In The Cabin.
- Poor Idling Or Minor Hesitation When The Purge System Malfunctions.
- Visible Damage To The Canister Body, Broken Hoses Or Connectors.
Typical Causes Of Failure
The most common reasons the canister fails are saturation or contamination of the activated carbon (for example by liquid fuel entering the canister), physical damage from underbody impact, degraded or cracked EVAP hoses and seals, and clogging caused by debris or water ingress. In many cases the canister itself remains functional but associated components—piping, valves and seals—fail first and lead to increased loads or contamination of the canister.
Replacement And Installation
Replacement is straightforward for a competent mechanic with basic workshop tools. Typical steps:
- Locate The Canister (Usually Mounted Near The Fuel Tank Or Rear Underbody Depending On Model).
- Relieve Fuel System Vapour Pressure By Parking The Vehicle In A Ventilated Area; Avoid Open Flames.
- Remove Any Protective Panels Or Shields Securing Access To The Canister.
- Disconnect EVAP Hoses And Any Electrical Connectors (Note Position And Routing For Reassembly).
- Unbolt The Canister Bracket And Remove The Unit.
- Install The New Canister Using New Clamps Or Gaskets Where Applicable; Reconnect Hoses And Connectors In Their Original Positions.
- Perform A Leak Check And Clear EVAP-Related Diagnostic Codes With A Scanner After Replacement.
Recommended Checks During Installation: Inspect Purge Valve Operation, Replace Any Brittle Or Cracked Hoses, Verify Clamps And Mounting Brackets Are Secure.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Citroën C4; Peugeot 307
- Product Codes: 1502H9; 9683409180
- Other Numbers: Common EVAP Fault Codes: P0440, P0441, P0442, P0443, P0446; Internal References: 1502.H9
Installation Recommendations
- Use OEM-Equivalent Hoses And Clamps To Ensure Proper Sealing And Long Service Life.
- Replace Any Associated Rubber Lines If They Show Signs Of Age Or Damage.
- After Installation, Clear Fault Codes And Carry Out An EVAP System Test Or Smoke Test To Confirm No Leaks.
- Keep The Canister Dry During Fitting; Avoid Allowing Liquid Fuel Into The Unit.
Why The Part Most Commonly Breaks
Most failures are caused by fuel contamination (liquid fuel entering and saturating the carbon), physical damage from impacts, or progressive deterioration of connected hoses and seals that allow moisture and debris to enter the canister. Preventive checks of hoses and purge components during routine servicing significantly reduce premature canister failures.
Keywords For Search
Charcoal Canister, Carbon Canister, EVAP Canister, Activated Carbon Filter, 1502H9, 9683409180, Citroën C4, Peugeot 307, EVAP Fault P0440.
