Coolant Temperature High
The KUBOTA-E04 (Kubota) diesel fault code means: Coolant Temperature High. This is a critical severity code.
- Keep driving?
- No -- stop driving
- DIY difficulty
- advanced
- Estimated cost
- Free clean, $200-$400 fan clutch
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Common Symptoms
- Kubota cluster displays E04
Probable Causes (Ranked by Likelihood)
- Blocked rad fins Very Likely
Step-by-Step Diagnostic Procedure
Clean radiator, check coolant, verify fan clutch.
Frequently Asked Questions
What is Kubota code E04?
Kubota E04 means: Coolant Temperature High. Critical code -- stop operating until repaired.
Can I keep using my Kubota with E04?
Critical fault -- do not operate; tow or trailer to a dealer. Use Kubota Diagmaster software (dealer tool) for full diagnostics.
How much does E04 cost to fix on a Kubota?
Repair cost range: Free clean, $200-$400 fan clutch. Compact-tractor labor is typically $110-$150/hr in 2026.