Engine Coolant Temperature Sensor - Performance
The KUBOTA-P0116 (Kubota) diesel fault code means: Engine Coolant Temperature Sensor - Performance. This is a moderate severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- beginner
- Estimated cost
- $45-$140 thermostat, $90-$200 sensor
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Common Symptoms
- DPF will not regen (ECU doesn't see warm-up)
- Cold-start smoke
Probable Causes (Ranked by Likelihood)
- Stuck-open thermostat (very common on compact-tractor duty cycle) Very Likely
- Drifted coolant temp sensor Likely
Step-by-Step Diagnostic Procedure
Compare ECT live value to IR gun on thermostat housing.
Replace thermostat with Kubota OEM.
Frequently Asked Questions
What is Kubota code P0116?
Kubota P0116 means: Engine Coolant Temperature Sensor - Performance. Moderate code. Keep working cautiously and plan repair.
Can I keep using my Kubota with P0116?
Moderate fault -- continue light use, fix at next service. Use Kubota Diagmaster software (dealer tool) for full diagnostics.
How much does P0116 cost to fix on a Kubota?
Repair cost range: $45-$140 thermostat, $90-$200 sensor. Compact-tractor labor is typically $110-$150/hr in 2026.
P0116 on Other Platforms
The same code ID appears across other engines, vehicles, and equipment. Diagnostic flow varies by platform — see the matching breakdown: