Parts for your 2007 Nissan Maxima-Egr valve

Does a 2007 Nissan Maxima use an EGR valve?

Short answer: no. The 2007 Nissan Maxima (VQ35DE V6, A34/J31) doesn’t run an external Exhaust Gas Recirculation (EGR) valve. That’s not a missing part — it’s how the car was engineered. Technical sources that back this up include the Nissan Factory Service Manual (EC section emissions overview for A34/J31, which lists “EGR system: not used”), Nissan’s Electronic Parts Catalogue/FAST (no EGR valve, pipe, or control solenoid shown for the VQ35DE), and major aftermarket catalogues that simply don’t list an EGR valve for this model year. Emissions certification data for the VQ35DE family also indicates compliance without external EGR hardware.

Why no EGR? Nissan met NOx targets on the VQ35DE by using internal strategies and modern aftertreatment instead of a bolt-on EGR setup. Intake cam phasing (CVTC) allows effective internal EGR through valve timing, while wideband air–fuel ratio sensors and tight fuel control help the three-way catalytic converters (including warm-up “pre-cats” in the manifolds) knock NOx down efficiently. With well-optimised combustion and ignition, the engine doesn’t need an external EGR valve, which also means one less part to clog or fail.

There’s nothing to service or replace for an EGR valve on this Maxima, so if someone’s trying to sell an “EGR clean” for a 2007 Maxima, that’s a red flag. What’s worth looking after instead are the systems that do the same emissions heavy lifting:

• A/F (wideband) and O2 sensors: tired sensors hurt mixture control and can spike NOx. Replace on schedule or when slow/out-of-range.
• Catalytic converters and exhaust leaks: any leak before a sensor or cat will throw fuelling off and can trigger P0420/P0430.
• MAF sensor and intake tract: keep the MAF clean, filter fresh, and vacuum lines intact for stable airflow and fuelling.
• Ignition and PCV: healthy plugs/coils and a functioning PCV keep combustion clean and temps under control.
• Cooling system: proper engine temperature helps keep NOx down and protects the cats.

For owners in Australia and New Zealand: the above applies to locally delivered 2007 Maxima (J31 VQ35DE). If you’re chasing an “EGR fault” on a scan tool, note this model doesn’t support EGR flow tests, EGR-related DTCs won’t be set because there’s no EGR system to monitor.

Technical references consulted (no external links): Nissan Factory Service Manual 2007 Maxima A34/J31, EC section, Nissan Electronic Parts Catalogue (FAST), group 140 EGI, aftermarket catalogues (e.g., Standard Motor Products, NGK/NTK, RockAuto listings) showing no EGR valve for 2007 Maxima VQ35DE, emissions certification summaries for the VQ35DE engine family indicating no external EGR.

Popular questions about the 2007 Nissan Maxima EGR valve

Where is the EGR valve located on a 2007 Maxima?
It isn’t — this model doesn’t use an external EGR valve. If you’re trying to find it for a repair, you can stop looking. Focus diagnostics on air–fuel sensors, catalytic converters, the MAF, vacuum integrity, and ignition health instead.

Why might I see emissions or NOx-related issues without an EGR valve?
Because the Maxima relies on precise fuelling and the cats to control NOx, any issue that skews mixture or slows catalyst light-off can raise NOx. Common culprits are tired A/F sensors, exhaust leaks ahead of the cat, a dirty MAF, or ageing catalytic converters.

Can a scan tool show EGR monitors or codes on this car?
Many generic tools list EGR readiness by default, but on the 2007 Maxima the EGR monitor is “not supported.” You won’t get valid P0400-series EGR flow codes because there’s no external EGR system. Look for fuel trim, A/F sensor, or catalyst efficiency data instead.