Parts for your 2015 Mitsubishi Lancer-Egr valve

2015 Mitsubishi Lancer EGR Valve — What Owners Need to Know

For the 2015 Mitsubishi Lancer sold in Australia and New Zealand (CF series) with the 2.0L 4B11 and 2.4L 4B12 petrol engines, an external EGR (Exhaust Gas Recirculation) valve isn’t fitted. These engines meet ADR/Euro emissions targets using MIVEC variable valve timing, precise fuel control and a three-way catalytic converter rather than an add-on EGR system. The Ralliart and Evo X turbo 4B11T also don’t use a conventional EGR valve. Only certain overseas diesel variants may have EGR, and those diesels weren’t part of the mainstream AU/NZ 2015 line-up.

That call is supported by technical sources: the Mitsubishi Lancer Service Manual for 2015 (Group 11A—Engine, 4B1 series) shows no EGR circuit on the 4B11/4B12 petrol engines, the Mitsubishi ASA/CAPS parts catalogue for CF Lancer (AU/NZ VINs) doesn’t list an EGR valve, pipe or cooler for these engines, and the owner’s manual emissions section references PCV, EVAP and catalytic after-treatment, not EGR. Workshop literature for the 4B11T turbo platform also omits EGR hardware.

Why skip EGR on these petrol engines? With MIVEC variable valve timing, the engine can manage internal gas residuals via valve overlap to cut NOx and pumping losses, achieving clean combustion without the soot and deposit risks that external EGR can introduce. It’s simpler, more reliable, and still compliant—handy for high‑kilometre Aussie and Kiwi conditions.

What should owners maintain instead of an EGR valve? Focus on the bits that keep emissions and drivability spot-on:

• Regular throttle body and intake cleaning to prevent idle and stumble issues.
• Fresh engine oil and a functioning PCV valve to minimise oil vapour deposits.
• Healthy oxygen sensors and a leak-free exhaust so the cat can do its job.
• Quality fuel and timely spark plugs to keep combustion clean.
• ECU software updates where applicable, and scan for EVAP or airflow faults if the MIL comes on.

Popular questions about the 2015 Mitsubishi Lancer EGR valve

Does a 2015 Mitsubishi Lancer have an EGR valve?
For AU/NZ petrol models (4B11/4B12), no—there’s no external EGR valve. The engine uses MIVEC timing and the catalytic converter to manage emissions. Some overseas diesel Lancers do have EGR, but those aren’t common locally for 2015.

Why does my scan tool show an EGR fault on my Lancer?
Generic OBD readers list universal P04xx EGR codes, but your 2015 AU/NZ petrol Lancer doesn’t monitor an EGR system. If you see an EGR-labelled code, it’s likely a generic label or incorrect vehicle selection. Check for EVAP, O2 sensor or airflow-related codes instead, or verify the engine type if the car’s an import.

What emissions maintenance helps a Lancer that doesn’t have EGR?
Keep the throttle body clean, replace the PCV if it sticks, fix intake or exhaust leaks, maintain the oxygen sensors and catalytic converter health, and use decent fuel. These steps do more for emissions and economy on this engine than chasing a non-existent EGR valve.