Parts for your 2009 Toyota Vitz|yaris-Egr valve

2009 Toyota Vitz/Yaris EGR valve — do these models use one?

For the 2009 Toyota Vitz/Yaris, whether an EGR valve is relevant comes down to the engine. Technical sources indicate that the petrol models do not use an external EGR valve, while the diesel model does. Specifically, Toyota’s New Car Features (NCF) documents for the 1KR‑FE (1.0 L) and 1NZ‑FE/2NZ‑FE (1.5 L/1.3 L) engines state that an EGR system is not used, NOx control is achieved with variable valve timing and precise combustion control. The Toyota Electronic Parts Catalogue (EPC) for XP90 petrol variants shows no EGR valve part listing. By contrast, the 1.4 D‑4D diesel (engine code 1ND‑TV) is shown with an EGR valve and cooler in the EPC, and the Toyota Repair Manual for 1ND‑TV contains full EGR system diagnostics, including DTCs such as P0400/P0401.

So for owners of 2009 Vitz/Yaris petrol models in Australia and New Zealand, an EGR valve isn’t fitted and isn’t a service item. Toyota engineered these petrol engines to manage combustion temperatures and NOx using VVT‑i (creating “internal EGR” via cam timing), a three‑way catalytic converter, and tight fuel control—keeping the hardware simple and reliable without the soot management hassles an external EGR can bring.

Where sold with the 1.4 D‑4D diesel, the EGR valve is fitted to reduce NOx by routing measured exhaust gas back into the intake. On those diesels, the EGR can coke up with soot, especially with lots of short trips or poor‑quality fuel. Toyota’s diesel repair procedures include inspection, cleaning or replacement of the EGR valve and cooler, plus checking vacuum/actuation and relevant hoses.

• Petrol engines (2009 Vitz/Yaris): 1KR‑FE 1.0, 2NZ‑FE/2SZ‑FE 1.3, 1NZ‑FE 1.5 — no external EGR valve.
• Diesel engine (where applicable): 1ND‑TV 1.4 D‑4D — EGR valve and cooler fitted.

Technical sources referenced: Toyota New Car Features (NCF) for 1KR‑FE and 1NZ‑FE engines (notes “EGR system is not used” on these petrol engines), Toyota Electronic Parts Catalogue (XP90 Yaris/Vitz) showing EGR hardware only on 1ND‑TV diesel, Toyota Repair Manual (RM) for 1ND‑TV detailing EGR system operation and diagnostics.

Popular questions

How can someone tell if their 2009 Vitz/Yaris actually has an EGR valve?

Check the engine type first. If it’s a petrol 1KR‑FE, 2NZ‑FE/2SZ‑FE, or 1NZ‑FE, there’s no external EGR valve. If it’s the 1.4 D‑4D (1ND‑TV) diesel, there is. A visual check under the bonnet on diesels will usually reveal a metal EGR valve and cooler assembly near the intake manifold, with a pipe running from the exhaust side.

What symptoms point to a dirty EGR on the 1.4 D‑4D diesel?

Common signs include rough idle, hesitation, reduced power, black smoke, increased fuel use, and an engine light with codes like P0400/P0401. Many owners clean the EGR valve and passages, and ensure the cooler and related vacuum/actuation are working properly. Short‑trip driving can accelerate soot build‑up, so an occasional longer run helps.

Can an EGR valve be retrofitted to a petrol 2009 Vitz/Yaris for economy or emissions?

No. The petrol ECUs and calibrations aren’t designed for an external EGR circuit. These engines already use valve timing strategies and a three‑way cat to meet their emissions targets. Retrofitting would cause drivability and emissions issues and isn’t recommended.