ISX12/ISX11.9 CM2250 Fault Code: 3749 | SPN: 3226 | FMI: 20Aftertreatment 1 Outlet NOx Sensor – Data Not Rational – Drifted High

por ECMDIESELTUNING | Mar 6, 2025 | Uncategorized

Overview   CODE REASON EFFECT Fault Code: 3749PID: SPN: 3226FMI: 2/20LAMP: AmberSRT:    An offset in the outlet NOx sensor reading has been detected.     None on performance. Circuit Description The aftertreatment outlet NOx (nitrogen oxides)...

ISX12/ISX11.9 CM2250 Fault Code: 3736 | SPN: 3360 | FMI: 11Aftertreatment Diesel Exhaust Fluid Controller – Root Cause Not Known

por ECMDIESELTUNING | Mar 6, 2025 | Uncategorized

Overview   CODE REASON EFFECT Fault Code: 3736PID: SPN: 3360FMI: 11/11LAMP: AmberSRT:    Unexpected data link communications between the ECM and the aftertreatment diesel exhaust fluid controller have occurred.     Possible reduced engine...

ISX12/ISX11.9 CM2250 Fault Code: 3726 | SPN: 3216 | FMI: 16Aftertreatment 1 Intake NOx – Data Valid But Above Normal Operating Range – Moderately Severe Level

por ECMDIESELTUNING | Mar 6, 2025 | Uncategorized

Overview   CODE REASON EFFECT Fault Code: 3726PID: SPN: 3216FMI: 0/16LAMP: AmberSRT:    A high engine out NOx condition has been detected.     None on performance. Circuit Description The aftertreatment intake NOx (nitrogen oxides) sensor is a...

ISX12/ISX11.9 CM2250 Fault Code: 3725 | SPN: 3216 | FMI: 10Aftertreatment 1 Intake NOx Sensor – Abnormal Rate of Change

por ECMDIESELTUNING | Mar 6, 2025 | Uncategorized

Overview   CODE REASON EFFECT Fault Code: 3725PID: SPN: 3216FMI: 10/10LAMP: AmberSRT:    The aftertreatment intake NOx sensor reading is not valid.     None on performance. Circuit Description The aftertreatment intake NOx (nitrogen oxides) sensor...

ISX12/ISX11.9 CM2250 Fault Code: 3718 | SPN: 3216 | FMI: 13Aftertreatment 1 Intake NOx – Out of Calibration

por ECMDIESELTUNING | Mar 6, 2025 | Uncategorized

Overview   CODE REASON EFFECT Fault Code: 3718PID: SPN: 3216FMI: 13/13LAMP: AmberSRT:    A nominal system voltage mismatch has been detected by the aftertreatment intake NOx sensor.     None on performance. Circuit Description The aftertreatment...