Parts for your 2014 Honda Stream-Fuel cap

2014 Honda Stream fuel cap — purpose, care, and when to replace

The 2014 Honda Stream is fitted with a conventional threaded fuel filler cap, not a capless system. Honda’s owner’s manual for the Stream (RN6–RN9, 2012–2014 editions) identifies the fuel filler cap and specifies tightening it until it clicks, and Honda service information for the EVAP (evaporative emissions) system includes cap inspection and sealing checks during leak diagnosis. These technical sources confirm the fuel cap is relevant and required for correct operation.

On this model, the fuel cap does more than just stop petrol sloshing out. It seals the tank to keep petrol vapours inside, helping the EVAP system do its job and keeping the air clean. It also manages slight pressure changes in the tank, which helps the fuel system behave consistently from city runs to long open-road kilometres. A properly sealed cap reduces fuel smell around the vehicle and keeps dust and water out of the filler neck.

Servicing the 2014 Honda Stream should include a quick look at the fuel cap each time the car’s in for a service (about every 10,000–15,000 km or 12 months, depending on the workshop’s schedule). The cap should be tightened until it clicks several times. The rubber seal (O-ring) needs to be soft, uncracked, and free of nicks. Threads on the cap and filler neck should be clean of grit so the cap can seat squarely.

If the cap isn’t sealing, the car may log EVAP-related fault codes (often P0440, P0455, P0456) and may show a fuel smell after parking. That’s why Honda’s service procedures start with the basics: check the cap, the seal, and the tether, then smoke-test the EVAP system if needed. A genuine or quality OEM-equivalent cap matched to the Stream’s RN6–RN9 filler neck is the safe replacement choice.

• Replace the cap if it won’t “click”, the seal is cracked/hardened, the tether is broken, or there’s persistent petrol odour.
• Avoid overfilling after the first pump click-off, overfilling can flood the EVAP canister and stress the cap seal.
• Lightly wipe a dry silicone-safe cloth over the O-ring during services, don’t use grease or petroleum jelly.

A fresh, correctly spec’d cap helps keep the Stream fuel-efficient, emissions-compliant, and drama-free at the bowser.

Popular questions about 2014 Honda Stream fuel caps

What type of fuel cap does the 2014 Honda Stream use?
The 2014 Stream uses a threaded, click-to-tighten fuel filler cap with a tether, designed for the RN6–RN9 body codes. A genuine Honda or OEM-equivalent cap with the correct EVAP sealing spec is recommended to avoid leaks and warning lights.

Can a dodgy fuel cap cause a check engine light?
Yes. If the cap doesn’t seal properly, the EVAP system detects a leak and may trigger codes like P0456 or P0455. Ensuring the cap clicks several times when tightened, and replacing a worn cap, often resolves these faults without further repairs.

How often should the fuel cap be replaced?
There’s no fixed interval. Inspect it at each service. Replace when the O-ring hardens or cracks, the cap won’t click, there’s visible damage, or if EVAP leak codes persist after refitting the cap correctly.