Fitment

FCA Jeep Ram Fiat diesel vehicles with SCR AdBlue Euro 6 emission system including

• Jeep Cherokee 2.0 / 2.2 diesel SCR (2019–2020)
• Jeep Grand Cherokee diesel SCR applications (selected configurations)
• Ram ProMaster diesel SCR system (selected versions)
• Fiat Ducato 2.3 Multijet diesel Euro 6 SCR
• Selected FCA light commercial diesel SCR vehicles

OE reference
68328579AA
46337520
SNS0784A
A3C00684500-01

FAQ

What is this NOx sensor used for

It measures nitrogen oxide levels in diesel exhaust and sends signals to ECU for SCR AdBlue emission control system

Is this inlet or outlet sensor

It is used in SCR aftertreatment system and may function as inlet or outlet depending on vehicle configuration

Are 68328579AA and 46337520 interchangeable

Yes in many listings they are cross-referenced for the same SCR NOx sensor application, but always confirm ECU compatibility before replacement

What system does it work with

SCR Selective Catalytic Reduction system using AdBlue injection for Euro 5 and Euro 6 diesel emission compliance

What are common failure symptoms

Engine warning light SCR AdBlue fault reduced power limp mode NOx sensor communication error emission efficiency faults