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Generic Diesel Engine Fault Codes

Browse 5 diagnostic trouble codes across 1 engine series. Protocols: J1939.

🔴 2 STOP ENGINE 🟡 3 Check Next Stop

SCR System Engine Series — 5 fault codes

SPN 3226 FMI 0
NOx Sensor Circuit Failed
🔴 STOP ENGINE
Component: NOx Sensor 1 (Inlet) / SCR System Control Module • J1939
SPN 4364 FMI 18
SCR Conversion Efficiency Low
🟡 CHECK AT NEXT STOP
Component: SCR Catalyst / DEF Dosing System • J1939
SPN 1761 FMI 9
Abnormal Rate of Change in Aftertreatment
🟡 CHECK AT NEXT STOP
Component: SCR Control System / DEF Dosing Logic / NOx Sensors • J1939
SPN 3216 FMI 9
NOx Sensor Abnormal Update Rate
🟡 CHECK AT NEXT STOP
Component: NOx Sensor Communication / CAN Bus • J1939
SPN 4334 FMI 4
DEF Dosing Unit Circuit Low Voltage
🔴 STOP ENGINE
Component: DEF Injector / DEF Dosing Unit Power Supply • J1939