ISX12/ISX11.9 CM2250 Fault Code: 4167 | SPN: 5745 | FMI: 2Aftertreatment 1 Diesel Exhaust Fluid Dosing Unit 1 Heater – Data Erratic, Intermittent, or Incorrect

por ECMDIESELTUNING | Mar 7, 2025 | Uncategorized

Overview   CODE REASON EFFECT Fault Code: 4167PID: SPN: 5745FMI: 2/2LAMP: AmberSRT:    The aftertreatment diesel exhaust fluid dosing unit heater temperature is irrational.     Diesel exhaust fluid injection into the SCR aftertreatment system is...

ISX12/ISX11.9 CM2250 Fault Code: 4157 | SPN: 4376 | FMI: 7Aftertreatment Diesel Exhaust Fluid Return Valve – Mechanical System Not Responding or Out of Adjustment

por ECMDIESELTUNING | Mar 7, 2025 | Uncategorized

Overview   CODE REASON EFFECT Fault Code: 4157PID: SPN: 4376FMI: 7/7LAMP: AmberSRT:    A stuck aftertreatment diesel exhaust fluid return valve has been detected.     Diesel exhaust fluid injection into the SCR aftertreatment system is disabled....

ISX12/ISX11.9 CM2250 Fault Code: 3753 | SPN: 3713 | FMI: 31Diesel Particulate Filter Active Regeneration Inhibited Due to System Timeout – Condition Exists

por ECMDIESELTUNING | Mar 6, 2025 | Uncategorized

Overview   CODE REASON EFFECT Fault Code: 3753PID: SPN: 3713FMI: 11/31LAMP: NoneSRT:    The system was unable to perform an active regeneration of the aftertreatment diesel particulate filter.     None on performance. Circuit Description The engine...

ISX12/ISX11.9 CM2250 Fault Code: 3751 | SPN: 4792 | FMI: 7Aftertreatment SCR Catalyst System – Mechanical System Not Responding or Out of Adjustment

por ECMDIESELTUNING | Mar 6, 2025 | Uncategorized

Overview   CODE REASON EFFECT Fault Code: 3751PID: SPN: 4792FMI: 7/7LAMP: NoneSRT:    The ECM has detected a malfunctioning SCR catalyst.     None on performance. Circuit Description The engine control module (ECM) monitors the NOx concentration in...

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...