KUBOTA-U0140 moderate Kubota ›

Lost Communication with Body Control Module

The KUBOTA-U0140 (Kubota) diesel fault code means: Lost Communication with Body Control Module. This is a moderate severity code.

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Keep driving?
Yes, but fix soon
DIY difficulty
intermediate
Estimated cost
$40-$200 connector, $400-$900 BCM
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Common Symptoms

  • Lights or accessory glitches
  • Cluster fault

Probable Causes (Ranked by Likelihood)

  • BCM connector corrosion Likely

Frequently Asked Questions

What is Kubota code U0140?

Kubota U0140 means: Lost Communication with Body Control Module. Moderate code -- address promptly to avoid inducement / further damage.

Can I keep using my Kubota with U0140?

Moderate fault -- you can usually finish the job but plan repair soon. Use Kubota Diagmaster software (dealer tool) for full diagnostics.

How much does U0140 cost to fix on a Kubota?

Repair cost range: $40-$200 connector, $400-$900 BCM. Compact-tractor labor is typically $110-$150/hr in 2026.

Mechanics Guide Step-by-step diagnosis

Step-by-Step Diagnostic Procedure

  1. Reseat BCM connector.

  2. Check fuses.

U0140 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 U0140 Duramax moderate Lost Communication with Body Control Module

Commonly Affected Vehicles

  • Kubota M4-071 / M4-072 utility tractors
  • Kubota M5-091 / M5-111 utility tractors
  • Kubota M6S-111 tractors
  • Kubota M7-132 / M7-152 / M7-172 premium tractors
  • Kubota MX4800 / MX5400 / MX5800 / MX6000 utility tractors

Explore More

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

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