Fitment

FCA diesel vehicles with SCR AdBlue Euro 5 Euro 6 emission system including

• Alfa Romeo Giulia 2.2 JTDm diesel
• Alfa Romeo Stelvio 2.2 JTDm diesel
• Jeep Cherokee 2.2 diesel (SCR versions)
• Jeep Grand Cherokee diesel (selected SCR variants)
• Fiat Ducato 2.3 Multijet diesel SCR system
• Fiat Talento 1.6 / 2.0 diesel (selected SCR versions)
• Selected FCA 2.0 and 2.2 diesel SCR applications

OE reference
55284544
A2C15988000
SNS0906A
55283225 (related pair sensor)

FAQ

What is this NOx sensor used for

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

Is this inlet or outlet sensor

It is commonly used as the second SCR NOx sensor and may function as downstream or upstream depending on system configuration

Are all 55284544 sensors interchangeable

No FCA NOx sensors are ECU coded and must match exact OE number and calibration version

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 and emission efficiency faults