KUBOTA-P0380 moderate Kubota ›

Glow Plug / Heater Circuit 'A' Malfunction

The KUBOTA-P0380 (Kubota) diesel fault code means: Glow Plug / Heater Circuit 'A' Malfunction. This is a moderate 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.

My Garage →
Keep driving?
Yes, but fix soon
DIY difficulty
beginner
Estimated cost
$8-$25 per plug, $40-$120 relay

What Are the Symptoms of KUBOTA-P0380?

  • Hard cold start, white smoke until warm
  • MIL after key cycle

What Causes KUBOTA-P0380? (Most Likely First)

  • Failed glow plug (one or more) - classic D/V wear item Very Likely
  • Corroded glow plug bus bar Likely
  • Failed glow plug relay / timer Likely

Can I Still Drive with KUBOTA-P0380?

Yes, but fix soon. KUBOTA-P0380 is rated moderate severity. It is not an immediate stop-driving fault, but it will not clear itself — book the repair rather than ignoring it.

Frequently Asked Questions

What is Kubota code P0380?

Kubota P0380 means: Glow Plug / Heater Circuit 'A' Malfunction. Moderate code. Keep working cautiously and plan repair.

Can I keep using my Kubota with P0380?

Moderate fault -- continue light use, fix at next service. Use Kubota Diagmaster software (dealer tool) for full diagnostics.

How much does P0380 cost to fix on a Kubota?

Repair cost range: $8-$25 per plug, $40-$120 relay. Compact-tractor labor is typically $110-$150/hr in 2026.

Mechanics Guide Step-by-step diagnosis

How Do You Diagnose KUBOTA-P0380?

  1. Ohm each glow plug - typical spec 0.5-1.5 ohm. OL means replace.

  2. Check relay output with DMM during pre-heat cycle.

Sources 1

This page is built from documented references. Verify against your own service info before repair work.

  • SAE J2012Diagnostic Trouble Code Definitions (defines P0380 as a generic OBD-II code)

P0380 on Other Platforms

The same code ID appears across other engines, vehicles, and equipment. Diagnostic flow varies by platform — see the matching breakdown:

Gas / Automotive (OBD-II) Generic OBD-II definition for P0380 Bobcat serious Glow Plug / Heater Circuit A Malfunction Duramax moderate Glow Plug/Heater Circuit "A" PACCAR minor Glow Plug Control Circuit Power Stroke moderate Glow Plug/Heater Circuit "A" Yanmar serious Glow Plug / Heater Circuit A Malfunction

Which Vehicles Commonly Get KUBOTA-P0380?

  • 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)
  • Kubota BX1500 / BX22 / BX25 (older mechanical-inj)
  • Kubota B7100 / B7800 / B2630 compact tractors
  • Kubota L225 / L245 / L2550 / L3200 (mechanical-injection D-series)
  • Kubota M4700 / M6800 / M8200 / M9000 utility tractors
  • Kubota 02-series mini excavators (KX018, KX040, U17)

Explore More

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

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