DerateMaxxForce Diesel ECM

SPN 3714

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

Engine protection and emissions inducement power-limiting faults.

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Active derate — truck is losing power now

System

MaxxForce Derate

MaxxForce ECM Service

Diagnostic Overview

MaxxForce fault code SPN 3714 is typically a more serious emissions inducement or derate status code. The ECM may be limiting torque, vehicle speed, or engine operation because an emissions-related fault has remained unresolved. Like SPN 3712, it should be treated as a result code. The correct diagnostic path is to identify and repair the root aftertreatment or sensor fault that caused the inducement.

Likely Causes

Ignored or unresolved DEF/SCR/DPF fault, severe DPF restriction, DEF quality fault, SCR efficiency fault, NOx sensor fault, failed dosing system, or failed regeneration.

What To Check First

Look for the earliest active root-cause code, repair the emissions system fault, verify live aftertreatment data, then perform the proper reset or service procedure before returning the truck to service.

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Related Derate Fault Codes

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3567

MaxxForce fault code 3567 is listed as a derate-related entry in the supplied list.

3572

MaxxForce fault code 3572 is listed as a derate-related fault and should be treated as a power-limiting or inducement indicator until the complete diagnostic detail is confirmed.

SPN 1001 FMI 18

MaxxForce fault code SPN 1001 FMI 18 indicates that a monitored parameter is valid but below the expected operating range at a moderately severe level.

SPN 1569 FMI 16

MaxxForce fault code SPN 1569 FMI 16 is commonly associated with engine protection torque derate being active.

SPN 1570 FMI 1

MaxxForce fault code SPN 1570 FMI 1 is commonly associated with fuel rail pressure being below the expected range on engines using high-pressure fuel control.

SPN 3362 FMI 31

MaxxForce fault code SPN 3362 FMI 31 is generally associated with a DEF dosing system condition where the ECM has detected an abnormal state or condition present.

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