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.

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' Malfunction 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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