Exhaust Flow Diagram

WARNING: This page is about a different car, the 2018 Nissan Titan XD. However, it is still accessible from the selected car via links, so may be relevant.

Courtesy of NISSAN NORTH AMERICA, INC.

1.	EGR cooled exhaust flow to intake connection	2.	Exhaust Gas Recirculation (EGR) bypass valve assembly closed (air flows to low-pressure turbocharger and EGR valve)	3.	Cooled exhaust flow to intake manifold
4.	High-pressure turbocharger	5.	Low-pressure turbocharger	6.	Left bank exhaust manifold
7.	Exhaust port	8.	Exhaust valve	9.	Left bank up pipe
10.	Exhaust outlet to Diesel Oxidation Catalyst (DOC)	11.	Right bank up pipe	12.	Exhaust flow to EGR valve
13.	EGR valve	14.	EGR cooler	-	-

Courtesy of NISSAN NORTH AMERICA, INC.

1.	EGR bypass valve assembly open (air flows to the high-pressure turbocharger and intake connection)	2.	Exhaust flow to intake manifold	3.	High-pressure turbocharger
4.	Low-pressure turbocharger	5.	Left bank exhaust manifold	6.	Exhaust port
7.	Exhaust valve	8.	Left bank up pipe	9.	Exhaust outlet to DOC
10.	Right bank up pipe	-	-	-	-

Courtesy of NISSAN NORTH AMERICA, INC.

1.	Exhaust gas flow from turbocharger	2.	DOC intake temperature sensor	3.	Diesel Particulate Filter (DPF) intake temperature sensor
4.	Diesel Exhaust Fluid (DEF) tank	5.	DEF pump	6.	DPF outlet temperature sensor
7.	Decomposition tube	8.	SCR catalyst	9.	Exhaust flow exiting the after treatment system
10.	Particulate matter sensor	11.	Outlet NOx sensor	12.	SCR outlet temperature sensor
13.	Selective Catalytic Reduction (SCR) intake temperature sensor	14.	Decomposition tube	15.	Exhaust gas and DEF mixture
16.	DEF dosing valve	17.	DEF supply from DEF tank	18.	Exhaust gas flow from the DPF
19.	DPF	20.	DPF pressure sensor	21.	DOC
22.	Inlet mono-nitrogen oxides (NOx) sensor		: Front	-	-