Bobcat Hydraulic Oil Temperature High
The BOBCAT-M0311 (Bobcat) diesel fault code means: Bobcat Hydraulic Oil Temperature High. This is a serious severity code.
Unverified. We could not confirm this code's definition against freely available manufacturer documentation, so treat the meaning, severity and fix guidance on this page as unconfirmed. Check it against the manufacturer's service information for your exact model and serial range before acting on it. This page is kept out of search engines for that reason, and we are working through this family manual by manual.
- Keep driving?
- No — stop driving
- DIY difficulty
- intermediate
- Estimated cost
- $0-$2,500
What Are the Symptoms of BOBCAT-M0311?
- Hydraulic temp lamp red
- Slow cycle times as machine protects
What Causes BOBCAT-M0311? (Most Likely First)
- Plugged hydraulic oil cooler fins Very Likely
- Hydrostat relief valve failure generating heat Possible
- Low hydraulic oil level Possible
Can I Still Drive with BOBCAT-M0311?
No — stop driving. BOBCAT-M0311 is rated serious severity. Continuing to drive in this state risks further damage — get it looked at before your next trip.
Frequently Asked Questions
What is Bobcat code M0311?
Bobcat M0311: Bobcat Hydraulic Oil Temperature High. This code is reported on Bobcat equipment running the described engine family.
Can I keep working with Bobcat code M0311?
Do not continue operating. Risk of engine damage or unsafe shutdown.
How much does Bobcat M0311 cost to fix?
Estimated repair cost: $0-$2,500. 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
How Do You Diagnose BOBCAT-M0311?
Clean cooler core from inside out with low-pressure air.
Check hydraulic oil level and condition.
Scan hydrostat pressures during drive to confirm no internal bypass.
Which Vehicles Commonly Get BOBCAT-M0311?
- 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)
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