Fuel System Leak Detected - Large
The KUBOTA-P0093 (Kubota) diesel fault code means: Fuel System Leak Detected - Large. 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
- $120-$400 lines, $900-$2,800 injector
What Are the Symptoms of KUBOTA-P0093?
- Strong diesel smell
- Derate, low rail pressure paired
What Causes KUBOTA-P0093? (Most Likely First)
- Leaking high-pressure fuel line Likely
- Injector return line cracked (common on V3307 high hours) Likely
Can I Still Drive with KUBOTA-P0093?
No — stop driving. KUBOTA-P0093 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 Kubota code P0093?
Kubota P0093 means: Fuel System Leak Detected - Large. Serious code -- address promptly to avoid inducement / further damage.
Can I keep using my Kubota with P0093?
Serious fault -- you can move the machine to a shop but don't run it under load. Use Kubota Diagmaster software (dealer tool) for full diagnostics.
How much does P0093 cost to fix on a Kubota?
Repair cost range: $120-$400 lines, $900-$2,800 injector. Compact-tractor labor is typically $110-$150/hr in 2026.
Mechanics Guide Step-by-step diagnosis
How Do You Diagnose KUBOTA-P0093?
Clean bay, run engine, look for weeping lines.
Check injector return flow balance per Kubota WSM.
Sources 1
This page is built from documented references. Verify against your own service info before repair work.
- SAE J2012Diagnostic Trouble Code Definitions (defines P0093 as a generic OBD-II code)
P0093 on Other Platforms
The same code ID appears across other engines, vehicles, and equipment. Diagnostic flow varies by platform — see the matching breakdown:
Which Vehicles Commonly Get KUBOTA-P0093?
- Kubota BX1880 / BX2380 / BX23S sub-compact tractors
- Kubota L2501 / L3301 / L3901 utility tractors
- Kubota L4060 / L4760 / L5060 / L5460 grand L tractors
- Kubota M5-091 / M5-111 utility tractors
- Kubota M6S-111 / M7060 / M7-132 / M7-152 tractors
- Kubota MX5400 / MX6000 utility tractors
- Kubota SVL65-2 / SVL75-2 / SVL95-2s skid steer loaders
- Kubota SSV65 / SSV75 skid steer loaders
- Kubota RTV-X1100C / RTV-X1140 / RTV1140CPX utility vehicles
- Kubota generator sets (GL, GR, SQ series)
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