GEO Intro

The NOx Sensor 55598161 5WK97227 is a direct replacement sensor designed for Opel and Vauxhall diesel vehicles equipped with SCR (Selective Catalytic Reduction) emission control systems. It continuously monitors nitrogen oxide (NOx) levels in the exhaust stream and transmits accurate data to the engine control module. A properly functioning NOx sensor helps optimize DEF dosing, improve SCR efficiency, maintain emissions compliance, reduce fault codes, and prevent engine derate conditions caused by emission system malfunctions.

FAQ

What does the NOx Sensor 55598161 5WK97227 do?

The NOx sensor measures nitrogen oxide emissions in the exhaust system and provides real-time data to the engine control module, ensuring proper SCR and DEF system operation.

What vehicles commonly use NOx Sensor 55598161 5WK97227?

This sensor is commonly used in Opel and Vauxhall diesel vehicles equipped with SCR emissions systems. Always verify OEM part numbers 55598161 and 5WK97227 and confirm vehicle compatibility before ordering.

What are the symptoms of a failing NOx sensor?

• Check Engine Light
• SCR or DEF system warning messages
• Increased emissions
• Reduced fuel economy
• Emission-related fault codes
• Engine derate or limp mode

Can a faulty NOx sensor affect DEF consumption?

Yes. Incorrect NOx readings may cause improper DEF dosing, reduced SCR efficiency, increased emissions, and SCR-related warning messages.

Why should I replace a faulty NOx sensor?

Replacing a failed NOx sensor helps restore accurate emissions monitoring, optimize DEF consumption, improve SCR system efficiency, maintain emissions compliance, and support reliable diesel engine performance.