Parts for your 2002 Daihatsu Yrv-Fuel cap

2002 Daihatsu YRV fuel cap — purpose, care and when to replace

Technical sources confirm the 2002 Daihatsu YRV is fitted with a conventional sealed fuel filler cap. The 2002 YRV owner’s manual instructs drivers to tighten the cap until it clicks after refuelling, noting the cap is part of the vehicle’s evaporative emissions (EVAP) sealing. The Daihatsu Electronic Parts Catalogue for the YRV M200/M201 series lists a “fuel filler cap sub-assembly” (with gasket/seal and tether) in the Fuel Tank & Tube section. As a 2002 model with OBD‑II/EVAP monitoring, the YRV relies on a properly sealing cap, a loose or faulty cap can set leak-detection fault codes. On that basis, the fuel cap is absolutely relevant and used on the 2002 Daihatsu YRV.

On a 2002 Daihatsu YRV, the fuel cap does more than just keep the petrol in. It seals the filler neck so vapours don’t escape, keeps dust and water out of the tank, and allows the EVAP system to do its job. If the cap isn’t sealing, the car can throw a check engine light, use more fuel, and give off a whiff of petrol you don’t want hanging around the driveway.

As part of regular servicing, it’s smart to give the cap a quick once‑over. Make sure it tightens until it clicks, the tether isn’t broken, and the rubber seal isn’t flattened, cracked, or hard. A light wipe of the sealing surface on the filler neck helps too—no need for grease or oil, just keep it clean. If the YRV flags an EVAP leak code or you notice a fuel odour after filling up, the cap is the first and easiest thing to check.

When replacement time rolls around, go for a cap that’s specified for the YRV/M200 series and EVAP‑compatible. A genuine Daihatsu cap or a quality aftermarket equivalent will have the correct thread, venting characteristics, and gasket material. Avoid universal caps that “mostly fit”, a poor seal can mean repeated warning lights and a failed emissions test. Fitting is dead simple—remove the old cap, inspect the filler neck lip for nicks, then tighten the new cap until it clicks.

• Service tips:
  • Tighten until it clicks every refuel—don’t overdo it.
  • Inspect the rubber seal at each oil change, replace if perished or if the cap won’t click.
  • If you get EVAP codes (often P0440–P0457) or smell petrol, test or replace the cap first.

Popular questions

Does a loose or missing fuel cap cause a check engine light on a 2002 YRV?

Often, yes. The YRV’s EVAP system runs pressure tests, a loose, damaged, or missing cap can trigger small or large leak faults. Tighten until it clicks, clear the code, and if it returns, try a new cap before chasing hoses and valves.

How often should the fuel cap be replaced on a YRV?

There’s no fixed interval. Inspect at regular services and replace when the seal is cracked or hard, the cap won’t click, there’s a petrol smell, or EVAP leak codes keep popping up. Many originals last years, but rubber ages faster in hot climates.

Which cap fits the 2002 Daihatsu YRV?

Use a cap specified for the YRV M200/M201 series with EVAP sealing. A genuine Daihatsu part or an OEM‑equivalent aftermarket cap is best. Match by VIN or catalogue listing to ensure the correct thread and gasket profile.