Detroit Diesel

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22 November, 2025

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Detroit DD15 GHG14 (2014-16) Fault Code: SPN 3250 FMI 20 (ACM) Diesel Oxidation Catalyst Temperature Drift – Inlet Low or Outlet High

DESCRIPTION:70°C (126°F) difference during non-regeneration mode. MONITORED PARAMETER:Diesel Oxidation Catalyst (DOC) Inlet Temperature vs. DOC Outlet Temperature. TYPICAL ENABLING CONDITIONS:Coolant...

22 November, 2025

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Detroit DD15 GHG14 (2014-16) Fault Code: SPN 3250 FMI 3 (ACM) Diesel Oxidation Catalyst Outlet Temperature Circuit Failed High

NOTE: Please see the step by step troubleshooting procedures for this specific code. NOTE: If codes 3250-3, 3242-3, 3246-3, or...

22 November, 2025

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Detroit DD15 GHG14 (2014-16) Fault Code: SPN 3250 FMI 31 (ACM) Abnormal Diesel Oxidation Catalyst Temperature Rise

DESCRIPTION:Abnormal diesel oxidation catalyst (DOC) temperature rise. MONITORED PARAMETER:DOC temperature TYPICAL ENABLING CONDITIONS:Always on MONITOR SEQUENCE:None EXECUTION FREQUENCY:Continuous when enabling...

22 November, 2025

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Detroit DD15 GHG14 (2014-16) Fault Code: SPN 3250 FMI 4 (ACM) Diesel Oxidation Catalyst Outlet Temperature Circuit Failed Low

NOTE: Please see the step by step troubleshooting procedures for this specific code. PROBABLE CAUSES:1. DOC outlet temperature sensor harness/connector.2....

22 November, 2025

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Detroit DD15 GHG14 (2014-16) Fault Code: SPN 3250 FMI 7 (ACM) Diesel Oxidation Catalyst Outlet Temperature Circuit Failed Low

NOTE: Please see the step by step troubleshooting procedures for this specific code. NOTE: If any other codes active, fix...

22 November, 2025

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Detroit DD15 GHG14 (2014-16) Fault Code: SPN 3250 FMI 8 (ACM) Diesel Oxidation Catalyst Outlet Temperature – Signal Spike

DESCRIPTION:This fault indicates the aftertreatment control module (ACM) has detected a sudden temperature shift on the diesel oxidation catalyst (DOC)...

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Detroit Diesel