Bobcat Operator Display Code 03 - Engine Coolant Temperature High
The BOBCAT-CODE-03 (Bobcat) diesel fault code means: Bobcat Operator Display Code 03 - Engine Coolant Temperature High. This is a critical 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 depending on sub-system
What Are the Symptoms of BOBCAT-CODE-03?
- Overheat lamp, shutdown timer
What Causes BOBCAT-CODE-03? (Most Likely First)
- See specific cluster advice for this code family Varies
- Harness / sensor fault in affected system Likely
Can I Still Drive with BOBCAT-CODE-03?
No — stop driving. BOBCAT-CODE-03 is rated critical 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 CODE-03?
Bobcat CODE-03: Bobcat Operator Display Code 03 - Engine Coolant Temperature High. This code is reported on Bobcat equipment running the described engine family.
Can I keep working with Bobcat code CODE-03?
Do not continue operating. Risk of engine damage or unsafe shutdown.
How much does Bobcat CODE-03 cost to fix?
Estimated repair cost: $0-$2,500 depending on sub-system. 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-CODE-03?
Refer to Bobcat Operation & Maintenance Manual code list.
Clean radiator, check fan drive, check coolant.
If persistent, connect Bobcat Service Analyzer for full SPN/FMI.
Which Vehicles Commonly Get BOBCAT-CODE-03?
- 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)
- Bobcat S630 / S650 skid steer loaders (Doosan D24)
- Bobcat S770 / S850 skid steer loaders (Doosan D34)
- Bobcat T630 / T650 / T870 compact track loaders (Doosan D24/D34)
- Bobcat E55 / E85 mini excavators (Doosan D24)
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