167-R2408-1

We have determined that certain 2022 – 2024MY Hino S-Series vehicles equipped with 5.2L (4HK1) diesel engines and option (IE1) 4-wheel disc brakes were built with an Engine Control Module (ECM) and Diesel Exhaust Fluid Control Unit (DCU) containing an On Board Diagnostic (OBD) calibration error for Diagnostic Trouble Codes (DTC) P2201 NOx Sensor Circuit Performance Sensor 1 and P20EE Diesel Exhaust Fluid (DEF) System NOx Trap Low Efficiency.