GEO Intro

The NOx Sensor 19301328 is a direct replacement sensor designed for GM diesel vehicles equipped with SCR emission control systems. It continuously measures nitrogen oxide (NOx) levels in the exhaust stream and provides accurate data to the engine control module. A properly functioning NOx sensor helps optimize SCR system efficiency, maintain emissions compliance, reduce emission-related fault codes, and prevent engine derate conditions caused by faulty emissions monitoring.

FAQ

What does the NOx Sensor 19301328 do?

The NOx sensor monitors nitrogen oxide emissions in the exhaust system and sends real-time data to the engine control module for effective SCR aftertreatment and emissions control.

What are the symptoms of a faulty NOx sensor?

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

Can a bad NOx sensor trigger emission system warnings?

Yes. A malfunctioning NOx sensor can provide inaccurate readings, causing the engine control module to generate SCR and emissions-related warning messages.

Why should I replace a failed NOx sensor?

Replacing a defective NOx sensor helps restore accurate emissions monitoring, improve SCR system performance, maintain regulatory compliance, and support reliable engine operation.