Parts for your 2017 Mitsubishi Lancer-Egr valve

2017 Mitsubishi Lancer egr-valve — is it fitted or even needed?

Short answer: the 2017 Mitsubishi Lancer sold in Australia and New Zealand with the 2.0L (4B11) and 2.4L (4B12) petrol engines is not fitted with an external egr-valve. That’s by design, not an omission.

Technical sources backing this up include Mitsubishi Motors workshop literature for the 2016–2017 Lancer (4B11/4B12) which outlines the emission control kit as PCV, EVAP purge, upstream/downstream oxygen sensors and a three‑way catalytic converter, with no EGR system listed, the Mitsubishi OEM electronic parts catalogue (ASA/EPC) for AU/NZ 2017 Lancer variants, which contains no EGR valve or EGR cooler in relevant groups, and industry engineering literature on “internal EGR” via cam phasing on spark‑ignition engines explaining how variable valve timing replaces the need for a separate EGR circuit. Together, these show the 2017 petrol Lancer doesn’t use an egr-valve. Note: some earlier or overseas diesel Lancers do use EGR, but that’s a different engine family not sold new in AU/NZ in 2017.

Why no egr-valve on the 2017-mitsubishi-lancer petrol models?

• MIVEC variable valve timing lets the engine run valve overlap that draws a controlled amount of spent gas back into the cylinders (so‑called internal EGR), cutting NOx without extra hardware.
• The combination of internal EGR, precise fuel control and a three‑way cat meets ADR 79/04 (Euro 5‑equivalent) emissions for the era.
• Fewer parts means fewer failure points—no EGR passages to clog, no EGR cooler or valve to stick, and simpler diagnostics.

Chasing EGR issues on a 2017 Lancer petrol can send owners down the wrong rabbit hole. If a generic scan tool flashes an “EGR”‑type code, it’s usually a mislabel or a non‑supported monitor on this model. Under the bonnet, common causes of rough running or high NOx on these engines tend to be vacuum leaks, a dirty throttle body, ageing oxygen sensors, or PCV issues—not an EGR fault. A proper scan with live data, smoke‑testing the intake, and routine servicing (fresh air filter, quality fuel, periodic throttle body clean) will keep a 2017 Lancer happy without ever touching an egr-valve that simply isn’t there. If the car is a grey‑import diesel or a swapped/aftermarket setup, that’s a different story—those can use EGR, so identification by VIN and engine code is important.

Popular questions about the 2017-mitsubishi-lancer egr-valve

Does a 2017 Mitsubishi Lancer have an egr-valve?
No—on AU/NZ petrol models (4B11 2.0L and 4B12 2.4L) there’s no external EGR system. The engine relies on MIVEC valve timing and the catalytic converter to meet emissions.

Why did Mitsubishi skip the egr-valve on this model?
Because variable valve timing provides “internal EGR”, reducing combustion temperatures and NOx without extra plumbing. It simplifies the engine, reduces potential faults, and still meets the required standards.

I’m getting an EGR code—what should I check on a 2017 Lancer?
On this petrol model the EGR monitor isn’t supported, so a generic tool can misreport a code. Look instead for intake air leaks, a dirty throttle body, faulty O2 sensors, or PCV issues. Use a quality scan tool and follow the factory test plan for accurate diagnosis.