Parts for your 2022 Subaru Impreza-Egr valve

2022 Subaru Impreza EGR valve

Yes, the 2022 Subaru Impreza (FB20D 2.0‑litre petrol) runs a cooled, electronically controlled EGR valve. This is confirmed by Subaru’s Factory Service Manual for 2017–2022 Impreza (Engine/Emission Control – EGR System), the Subaru FAST parts catalogue listings for “Valve Assy – EGR” and “Cooler Assy – EGR” on FB20D, and mainstream repair databases like AllData and Mitchell that include EGR diagnostics (P0400–P0406) and replacement procedures for this model.

The EGR valve’s job is to feed a measured bit of exhaust back into the intake under light to mid load. That cuts combustion temps, trims NOx emissions, and helps the FB20D cruise more efficiently with reduced pumping losses. On this Impreza, the system is “cooled EGR”, so exhaust gas first passes through a small heat exchanger (EGR cooler) before entering the manifold, making the whole process cleaner and more effective.

Owners won’t find a scheduled replacement interval for the EGR valve in the maintenance guide. Instead, think of it as a condition‑based item. Lots of short trips, idling, or low‑speed city runs can build soot in the valve, cooler and intake runners. Tell‑tales include a rough idle, hesitation off the mark, pinging under light load, worse fuel economy, or the MIL with EGR‑related DTCs.

For servicing, a sensible plan is to request an inspection around 100,000–150,000 kilometres, earlier if the car does mostly suburban work. A workshop can check EGR command vs flow using a scan tool, and visually assess carbon build‑up. Cleaning the valve and, if needed, de‑coking the cooler and intake passages can restore smooth running. If the valve is sticking electrically or mechanically, replacement is straightforward: disconnect the battery, remove the intake ducting for access under the bonnet near the firewall side of the engine, unbolt the valve from the cooler flange, fit a new gasket, and tighten to factory torque. If the cooler is removed, expect a coolant top‑up and bleed afterwards. A post‑repair relearn and a short road test to confirm EGR operation seals the deal.

• Common fault codes: P0400, P0401, P0402, P0403, P0404, P0405, P0406
• Best practice: inspect/clean at 100–150k km, replace only if out of spec or sticking
• Symptom check: rough idle, flat spots, pinging, MIL on, higher fuel use

Done right, keeping the EGR system clean helps the 2022 Impreza stay frugal and happy on Aussie and Kiwi roads.

Popular questions about the 2022 Subaru Impreza EGR valve

Where is the EGR valve on a 2022 Subaru Impreza?
It’s mounted at the rear of the engine, on the driver’s side for right‑hand‑drive cars, bolted to the EGR cooler and feeding into the intake manifold. Access is typically from the top with the airbox and intake ducting out of the way, working near the firewall under the bonnet.

How often should the EGR valve be cleaned or replaced?
There’s no fixed interval. For mixed highway use, have it checked around 100,000–150,000 km. City and short‑trip cars may need attention sooner. Clean when flow is restricted or carboned up, replace only if electrically faulty or mechanically jammed. Always use new gaskets and follow factory torque specs.

What are the common symptoms of a failing EGR valve?
Rough idle, hesitation off idle, light‑load pinging, increased fuel consumption, and an engine light with codes like P0400–P0406 are typical. If ignored, excessive carbon can spread into the intake and the cooler, so timely inspection saves headaches later.