NOTE: Please see the step by step troubleshooting procedures for this specific code.
NOTE: If any other codes active, fix those first.
PROBABLE CAUSES:1. DOC outlet temperature sensor harness/connector.2. DOC outlet temperature sensor.3. Failed fuel injector.4. Remove the DPF and inspect for coolant or oil contamination. If found, find source of leak.5. Perform a parked regen.6. Electrical connections upstream of the ECM can also cause this code: ATD harness 10-pin connector, VIH 31-pin connector, and MCM 120-pin connector.7. DPF inlet pressure sensor.8. DPF inlet pressure sensor harness/connector.
Detroit DD13 GHG14 (2014-16) Fault Code: SPN 3250 FMI 4 (ACM) Diesel Oxidation Catalyst Outlet Temperature Circuit Failed Low
Detroit DD13 GHG14 (2014-16) Fault Code: SPN 3250 FMI 3 (ACM) Diesel Oxidation Catalyst Outlet Temperature Circuit Failed High
Detroit DD13 GHG14 (2014-16) Fault Code: SPN 3250 FMI 0 (ACM) Diesel Oxidation Catalyst Outlet Temperature Very High
Detroit DD13 GHG14 (2014-16) Fault Code: SPN 3246 FMI 21 (ACM) Diesel Particulate Filter Outlet Temperature Sensor – Not Plausible
Detroit DD13 GHG14 (2014-16) Fault Code: SPN 3246 FMI 20 (ACM) Diesel Particulate Filter Outlet Temperature Sensor Stuck
Detroit DD13 GHG14 (2014-16) Fault Code: SPN 3246 FMI 15 (ACM) Diesel Particulate Filter Outlet Temperature – High