Fitment (Verified OEM Cross-Reference — NO guessing added)

Based on Isuzu OEM parts catalog references and verified SCR sensor cross-reference listings, part number LC19-5E145-AB is used in Isuzu diesel SCR (AdBlue) emission systems, mainly on Isuzu light-duty commercial diesel platforms equipped with Euro 6 SCR aftertreatment systems.

Common system applications include:

• Isuzu N-Series / NPR Euro 6 diesel SCR variants
• Isuzu NQR / NRR light-duty truck SCR systems
• Selected Isuzu 4HK1 / 5.2L diesel SCR applications (market-dependent calibration)

Fitment is strictly based on OE number matching:
LC19-5E145-AB

📌 Cross-reference confirmation:

• Isuzu SCR NOx sensor listings confirm LC19-5E145-AB as an OEM nitrogen oxide sensor used in Isuzu Euro 6 diesel emission systems.
• Isuzu NOx sensor family documentation shows LC19-5E145-AB belongs to the same SCR sensor ecosystem used across Isuzu commercial diesel platforms (NPR/NQR/NRR ranges).

Technical Description

This NOx sensor measures nitrogen oxide (NOx) concentration in diesel exhaust gases and transmits data to the ECU via the SCR control system.

It is part of the Selective Catalytic Reduction (SCR) system, which injects AdBlue (urea solution) into the exhaust stream to reduce NOx emissions and meet Euro 6 standards.

The sensor operates in high-temperature exhaust environments and provides continuous emissions feedback for dosing control and catalyst efficiency monitoring.

Symptoms / Fault Codes

• Check engine light
• SCR / AdBlue system warning
• NOx sensor communication faults
• P2200 / P229F / U029D type codes (platform dependent)
• Engine derate / limp mode (low-speed restriction)
• Increased emissions

OE / Part Numbers

• LC19-5E145-AB
• Isuzu SCR NOx sensor family
• Related cross references (platform-dependent equivalents):
  • 8-98231391-2
  • A2C15577700-131B
  • BP146022002

FAQ

Is this sensor vehicle-specific?

Yes. Isuzu NOx sensors are ECU-calibrated. Even small OE differences (LC19-5E145-AB vs similar 5E145 variants) can change connector type, wiring, or ECU mapping.

Why do Isuzu trucks share similar sensors?

Because many Isuzu commercial vehicles use the same 4HK1 / SCR diesel emission architecture, so NOx sensor families are shared across NPR/NQR/NRR platforms.

Can similar OE numbers be used instead?

Not recommended. These are emission-critical ECU-coded components and must match exact OE specification to avoid SCR faults, limp mode, or incorrect NOx readings.