FITMENT
Compatible with RAM 1500 EcoDiesel (2016–2019) equipped with SCR (Selective Catalytic Reduction) AdBlue emission systems requiring NOx monitoring.
Common applications include diesel exhaust aftertreatment systems using reference:

• 68171188AA

Used in Euro 5 / Euro 6 SCR emission control setups.

FAQ
Q1: What is the function of this NOx sensor?
A1: It measures nitrogen oxide (NOx) levels in the exhaust system and sends data to the ECU to regulate AdBlue/DEF injection and reduce emissions.

Q2: Where is it installed?
A2: It is installed in the exhaust system, typically upstream or downstream of the SCR catalytic converter depending on system design.

Q3: What are symptoms of failure?
A3: Check engine light, SCR/AdBlue warnings, NOx sensor fault codes, reduced engine performance, or limp mode activation.

Q4: Is 68171188AA interchangeable with AB version?
A4: They are closely related revisions, but exact compatibility depends on ECU calibration and vehicle build. Always verify part number before replacement.