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Home >> Jaguar >> 2020 >> XF Checkered Flag >> Repair and Diagnosis >> External Pages >> Different car >> Section 36 (Exhaust System - INGENIUM I4 2.0L Diesel -- XE (X760)) >> Exhaust System - INGENIUM I4 2.0L Diesel >> Selective Catalyst Reduction >> Description And Operation >> Component Description >> Nitrogen Oxide (NOX) Sensor

Nitrogen Oxide (NOX) Sensor

WARNING: This page is about a different car, the 2018 Jaguar XE and 2017 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.
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The post SCR Nitrogen Oxide (NOx) sensor is located in the exhaust pipe downstream of the SCR catalytic converter. On NAS market vehicles there is an additional NOx sensor fitted upstream of the SCR catalytic converter. The NOx sensor comprises a sensor element attached to a dedicated control module with a hardwired connection.

The sensor and the control module are replaced as an assembly. The NOx sensor is an evolution of the wide band oxygen sensor. The sensor element is constructed from special ceramics and contains two oxygen density detecting chambers that work together to determine the NOx concentration in the exhaust gas. The control module sends a message via the Private CAN bus to the PCM for monitoring the effectiveness of the SCR System.

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