Engine Protection Torque Derate - Condition Exists
The CUMMINS-3714 (Cummins) diesel fault code means: Engine Protection Torque Derate - Condition Exists. This is a serious severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- intermediate
- Estimated cost
- Varies entirely by the root cause -- 3714 itself costs nothing to fix and clears once the active fault behind the derate is repaired
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Common Symptoms
- Noticeable power loss (engine torque derate in effect)
- Possible reduced road-speed limit
- Amber warning lamp on the dash
- One or more OTHER active fault codes present at the same time
- Higher fuel consumption while derated
Probable Causes (Ranked by Likelihood)
- An active engine-protection fault is forcing the derate -- 3714 is the derate flag itself, not the root cause Very Likely
- Aftertreatment fault behind it (DEF level/quality, SCR efficiency, NOx sensor, or DPF soot overload) Likely
- Low oil pressure or high coolant temperature engine-protection trigger Possible
- Sensor or wiring fault on a monitored engine circuit Possible
Step-by-Step Diagnostic Procedure
Connect INSITE (or an equivalent tool) and read ALL active fault codes. 3714 is a companion to another active fault, not a standalone problem.
Identify and repair the underlying active fault(s) that triggered engine protection -- aftertreatment/DEF and SCR faults are the most common triggers.
Check DEF level and quality (should be 32.5% urea on a refractometer) and scan the SCR/NOx system if an aftertreatment fault is present.
If no aftertreatment fault is stored, verify engine oil pressure and coolant temperature are within spec.
After the root fault is repaired and confirmed inactive, fault 3714 clears on its own. Clear codes and road-test to confirm the derate is gone.
Common Fixes by Vehicle
What techs usually find when diagnosing CUMMINS-3714 on specific platforms — tap a platform for the fix and the exact part:
2013-2018 Ram 2500/3500 6.7L Cummins Advanced DIY
FC 3714 (multiple cylinder misfire) on the Cummins usually means injector issues. Pull INSITE and check injector flow balance -- one or more cylinders will show a large deviation. Replace the failing injector; OEM Cummins injectors run $400-$600 each plus $50 return-line kit. Always replace in opposing pairs (1+6, 2+5, 3+4) if two are close to the limit. Never reuse injector hold-down bolts.
Labor: 3-5 hours per injectorFrequently Asked Questions
What is Cummins fault code 3714?
Cummins fault code 3714 (SPN 1569, FMI 31) is 'Engine Protection Torque Derate - Condition Exists.' It is an information-only code: the ECM has reduced engine power (and may limit road speed) to protect the engine because another critical fault is active. You do not repair 3714 directly -- fix the underlying active fault and 3714 goes inactive.
Can I drive with Cummins fault code 3714?
The truck will run but in a reduced-power derate, and it may also be speed-limited. You can usually limp it to a shop, but the derate will not clear until the root-cause fault is repaired. Don't ignore it -- the derate exists because the engine is protecting itself.
How do I clear Cummins fault 3714?
You don't clear it directly. Read all active fault codes with INSITE, repair the underlying fault(s) that triggered engine protection (often a DEF/SCR or other aftertreatment issue), and once the ECM confirms those are inactive, fault 3714 changes to inactive on its own.
Sources
This page is built from documented references. Verify against your own service info before repair work.