KUBOTA-P0122 serious Kubota ›

Throttle/Pedal Position Sensor A Circuit Low

The KUBOTA-P0122 (Kubota) diesel fault code means: Throttle/Pedal Position Sensor A Circuit Low. This is a serious severity code.

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Keep driving?
Limp mode only
DIY difficulty
intermediate
Estimated cost
$120-$300 pedal
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Common Symptoms

  • No throttle response
  • Idle only

Probable Causes (Ranked by Likelihood)

  • Open 5V supply to pedal Likely
  • Internal short in pedal assy Possible

Frequently Asked Questions

What is Kubota code P0122?

Kubota P0122 means: Throttle/Pedal Position Sensor A Circuit Low. Serious code -- address promptly to avoid inducement / further damage.

Can I keep using my Kubota with P0122?

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 P0122 cost to fix on a Kubota?

Repair cost range: $120-$300 pedal. Compact-tractor labor is typically $110-$150/hr in 2026.

Mechanics Guide Step-by-step diagnosis

Step-by-Step Diagnostic Procedure

  1. Check 5V ref at pedal connector.

  2. Replace pedal if 5V is present but signal is 0V.

Sources 1

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

  • SAE J2012Diagnostic Trouble Code Definitions (defines P0122 as a generic OBD-II code)

P0122 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 P0122

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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