BOBCAT-M0307 serious Bobcat ›

Bobcat Engine Derate Active - Aftertreatment Inducement

The BOBCAT-M0307 (Bobcat) diesel fault code means: Bobcat Engine Derate Active - Aftertreatment Inducement. This is a serious severity code.

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Keep driving?
Limited driving only
DIY difficulty
intermediate
Estimated cost
Depends on root cause
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Common Symptoms

  • Power / RPM limit active
  • Amber engine + regen lamps

Probable Causes (Ranked by Likelihood)

  • Ignored prior DPF regen request Very Likely
  • DEF system fault escalated to derate Likely
  • Emissions sensor fault not cleared Possible

Frequently Asked Questions

What is Bobcat code M0307?

Bobcat M0307: Bobcat Engine Derate Active - Aftertreatment Inducement. This code is reported on Bobcat equipment running the described engine family.

Can I keep working with Bobcat code M0307?

Limited operation only -- finish the current task then shut down for repair.

How much does Bobcat M0307 cost to fix?

Estimated repair cost: Depends on root cause. Off-road diesel shop labor runs $125-$175/hr in 2026. Dealer diagnostic software (Bobcat Service Analyzer) is usually required.

Mechanics Guide Step-by-step diagnosis

Step-by-Step Diagnostic Procedure

  1. Use Service Analyzer to identify the underlying SPN/FMI triggering derate.

  2. Run parked regen to satisfy DPF inducement.

  3. Check DEF quality and NOx sensor feedback.

Commonly Affected Vehicles

  • Bobcat S650 skid steer loader (Kubota V3800)
  • Bobcat S740 / S750 / S770 / S850 skid steer loaders (Kubota V3800)
  • Bobcat T650 / T750 / T770 / T870 compact track loaders (Kubota V3800)
  • Bobcat E50 / E55 / E60 / E85 mini excavators (Kubota V3800)
  • Bobcat UW56 utility vehicle (Kubota V3800)

Related Codes

BOBCAT-M0309BOBCAT-P2002

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More Bobcat codes → Diesel home All diesel codes Heavy-duty Guides

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