Fitment

Opel Vauxhall diesel vehicles with SCR AdBlue Euro 6 emission system including

• Opel Astra K 1.6 CDTi diesel 2015–2021
• Opel Astra K Sports Tourer 1.6 CDTi diesel
• Opel Insignia B 2.0 CDTi diesel (selected SCR versions)
• Opel Mokka X 1.6 CDTi diesel (selected SCR versions)
• Vauxhall Astra K 1.6 CDTi diesel
• Vauxhall Insignia B diesel SCR applications
• Selected GM 1.6 / 2.0 diesel SCR platforms

OE reference
55495596
SNS717
A2C15954700-01
A2C15954700

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 NOx sensor position 1 in SCR system depending on vehicle configuration

Are all 55495596 sensors interchangeable

No Opel Vauxhall 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 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