SPN 412 / FMI 0
EGR Temperature — Above Normal (Most Severe)
SAE J1939
egr
SPN 412
FMI 0
What it means
EGR gas temperature too high — cooler fault or excessive flow.
Seeing SPN 412 / FMI 0?
Run a free AI diagnosis for your engine — causes ranked by real-world fix rates, with TSBs and parts.
Run a free diagnosisRelated codes
SPN 411 / FMI 3
EGR Differential Pressure — Voltage High
egrMedium
P0401
EGR Flow Insufficient Detected
egrMedium
P0402
EGR Flow Excessive Detected
egrMedium
P0403
EGR Control Circuit
egrMedium
General reference only — always confirm against the OEM procedure for your specific engine.