AftertreatmentCaterpillar Diesel ECM

SPN 3413 FMI 6

Name: ECM Performance
Address: Fort Lauderdale, FL, 33325, US
Telephone: (888) 768-2447
Price range: $$-$$$

DPF, DEF, SCR, and NOx-reduction system faults.

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System

Caterpillar Aftertreatment

Caterpillar ECM Service

Diagnostic Overview

CAT fault code 3413-6 generally indicates an ARD or aftertreatment control circuit with current above normal or a shorted condition. The ECM may shut down the affected function to protect the circuit. Because this can interfere with regeneration, the DPF may begin to accumulate soot if the problem is not repaired. Diagnosis should focus on the electrical circuit and the controlled component rather than immediately cleaning the DPF.

Likely Causes

Short to ground; shorted component; damaged harness; failed relay or solenoid; water intrusion in connector; rubbed wiring near exhaust components.

What To Check First

Check the circuit identified by Cat ET, inspect the harness for rub-through, test the component, and verify there are no shorts before clearing the code.

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Related Aftertreatment Fault Codes

View All Aftertreatment Codes

SPN 1761 FMI 17

CAT fault code 1761-17 commonly relates to diesel exhaust fluid level or a DEF level signal that is below the expected range.

SPN 3360 / SPN 3820

CAT codes listed as 3360/3820 generally point toward the DEF supply, DEF quality, DEF tank, or SCR dosing system depending on the exact FMI shown in Cat ET.

SPN 3361 / SPN 3821

CAT codes listed as 3361/3821 commonly belong to the DEF dosing or SCR control side of the aftertreatment system.

SPN 3474 FMI 31

CAT fault code 3474-31 is typically associated with aftertreatment regeneration or ARD-related operation.

SPN 3701 FMI 15

CAT fault code 3701-15 commonly indicates an aftertreatment condition that is above normal but at a least-severe level, often connected with DPF soot load, regeneration need, or aftertreatment restriction.

SPN 3701 FMI 16

CAT fault code 3701-16 usually represents a more serious aftertreatment condition than 3701-15, with the measured or calculated value above normal at a moderate severity level.

View All Aftertreatment Codes →