Parts for your 2010 Nissan Dualis-Egr valve

2010 Nissan Dualis EGR valve — what’s fitted and what isn’t

Short answer: if it’s a 2010 Nissan Dualis running the 2.0-litre petrol MR20DE (the common AU/NZ spec), it does not have an external EGR valve. That’s backed by the Nissan Qashqai/Dualis J10 Electronic Service Manual (EC section for MR20DE), which lists the EGR system as “not used”, and by Nissan FAST/parts cataloguing where EGR components (group 14710) don’t appear against the MR20DE but do appear against the diesel engines. On the flip side, the diesel Dualis (M9R 2.0 dCi or K9K 1.5 dCi, more common in Europe and as used imports) is equipped with an electronically controlled EGR valve and cooler, as shown in the diesel EC sections of the factory service manuals.

Why no EGR on the petrol Dualis? The MR20DE meets emissions targets using cam phasing (CVTC) to create internal EGR, tight fuel control with a three-way catalyst, and efficient combustion. That strategy trims NOx without the extra plumbing, potential soot build-up, and thermal load of an external EGR circuit—so Nissan simply didn’t fit one on the MR20DE for this model year.

If someone’s chasing an “EGR problem” on a petrol Dualis, look elsewhere: intake/throttle body fouling, vacuum leaks, or MAF issues are far more likely than an EGR fault because there’s no valve to stick in the first place.

• How to tell what you’ve got under the bonnet:
  • Engine code: MR20DE (petrol) = no EGR valve, M9R/K9K (diesel) = has EGR.
  • Visual check: diesels have an EGR valve with a small cooler and metal pipework linking exhaust to intake near the firewall side.
  • Paperwork: the compliance/ID plate and service manual pages list the engine code, parts counters will confirm via VIN.

Got a diesel Dualis? Expect EGR to need periodic cleaning or replacement over higher kilometres thanks to soot and oil mist. Quality fuel, regular oil changes, proper DPF-friendly driving (longer runs to let it regenerate), and intake cleaning will help keep the EGR and intake tract happier for longer.

Does the 2010 Nissan Dualis have an EGR valve?

Petrol MR20DE models: no EGR valve fitted. Diesel M9R/K9K models: yes, they have an EGR valve and cooler from factory, as per Nissan diesel EC service manual sections and parts cataloguing.

How do they know if their Dualis is petrol MR20DE or a diesel with EGR?

Check the engine code on the compliance plate or service records. Under the bonnet, diesels have an EGR valve with cooler plumbing from exhaust to intake. If it runs on petrol, it’s almost certainly MR20DE and therefore no external EGR.

What EGR maintenance applies if it’s a diesel Dualis?

Plan on inspection/cleaning around 80–120,000 km, more often if it does short trips. Use quality fuel, keep up oil services, and give it regular longer drives to help manage soot. If the valve sticks or the cooler blocks, replacement may be the most reliable fix.