Parts for your 2009 Mitsubishi Lancer-Egr valve

2009 Mitsubishi Lancer EGR valve — fitted or not?

For most 2009 Mitsubishi Lancer models sold in Australia and New Zealand with petrol engines (the 2.0-litre 4B11 and 2.4-litre 4B12), there is no external EGR valve fitted. These engines use variable valve timing (MIVEC) and calibrated ignition/fuelling to achieve “internal EGR” and meet emissions targets with a three‑way catalytic converter, so an external EGR system isn’t required. By contrast, certain overseas-market diesel Lancers (2.0 DI‑D) do use a dedicated EGR valve and cooler to control NOx under lean combustion.

Technical sources that support this:

• Mitsubishi Motors CJ Lancer Workshop Manual (2007–2012), Emission Control (Group 17A): Petrol 4B11/4B12 sections specify no external EGR system, emissions control is via MIVEC, TWC, EVAP, and OBD monitoring.
• Mitsubishi technical training/engine overview for the 4B1 family (GEMA 4B11/4B12): details dual VVT enabling internal EGR and fast catalyst light‑off, eliminating the need for an external EGR valve on petrol variants.
• Haynes Repair Manual: Mitsubishi Lancer 2007–2015: notes petrol engines are not equipped with an EGR valve, while the 2.0 DI‑D diesel uses an EGR valve and cooler.
• European market service/parts literature for Lancer 2.0 DI‑D (VW‑sourced 2.0 TDI): shows an electronically controlled EGR valve with an EGR cooler assembly on diesel variants.

Why the 2009 Lancer petrol doesn’t use an EGR valve:

• MIVEC cam phasing delivers internal EGR by overlapping valve timing at light load, reducing combustion temperatures and NOx without extra hardware.
• Running at stoichiometric AFR lets the three‑way cat clean up NOx effectively, so external EGR offers little added benefit for these engines.
• Fewer parts means fewer failure points and lower maintenance for everyday owners.

What this means for owners: if the car is a 2009 Lancer petrol (common in AU/NZ), there’s nothing to service or replace in terms of an EGR valve—because it isn’t there. If looking at a diesel Lancer from overseas markets, an EGR valve and cooler are part of the emissions system and will need periodic attention due to soot build‑up.

FAQs

Does a 2009 Mitsubishi Lancer have an EGR valve?
Petrol models (2.0 4B11 and 2.4 4B12) don’t have an external EGR valve. Some overseas diesel 2.0 DI‑D models do have an EGR valve and cooler. Check the engine code on the build plate: if it’s 4B11/4B12, there’s no EGR valve to worry about.

Which 2009 Lancer engines use an EGR valve?
Only the diesel variant (2.0 DI‑D in certain markets) uses an EGR valve. Petrol variants rely on MIVEC cam timing and the catalytic converter to manage emissions, so Mitsubishi didn’t fit an EGR system to those engines.

What symptoms show a failing EGR on a diesel Lancer, and what’s the fix?
Common signs include rough idle, hesitation, smoke, reduced power, and EGR‑related fault codes. The usual remedy is removing and cleaning the EGR valve and, if fitted, the EGR cooler. Severely worn or stuck valves are replaced, and it’s smart to check intake deposits and update the ECU calibration if applicable.