Fuel Rail Pressure Too Low
The KUBOTA-P0087 (Kubota) diesel fault code means: Fuel Rail Pressure Too Low. This is a critical severity code.
- Keep driving?
- No -- stop driving
- DIY difficulty
- intermediate
- Estimated cost
- $20-$60 filter, $600-$1,500 HP pump
A $30 car code reader can't do diesel. The HD7000 reads full-system codes and does parked DPF regen, idle/speed-limit, and service resets from the cab — on everything from a 6.7 Cummins/Power Stroke/Duramax pickup to Class-8 trucks (Detroit, Paccar, CAT, Volvo, Mack, International).
Check Price on AmazonAffiliate link -- we earn a commission at no extra cost to you.
Full-system 6/9/16-pin diesel scan tool for Cummins, Paccar, CAT, Detroit and more — plug-and-play, no subscription. A cheaper way to read heavy-duty codes a basic OBD2 scanner skips entirely.
Check Price on AmazonAffiliate link -- we earn a commission at no extra cost to you.
Common Symptoms
- No start / long crank
- Derate or stalling under load
Probable Causes (Ranked by Likelihood)
- Plugged fuel filter (MX/M7 interval is 400 hrs) Very Likely
- Contaminated or old fuel in seasonal equipment Likely
- Failed suction control valve on HP pump Possible
- Worn HP pump Less Likely
Step-by-Step Diagnostic Procedure
Replace fuel filter (Kubota 1G311-43380 equivalent) and prime.
Drop fuel sample in clear jar and inspect.
Scan rail pressure target vs. actual in Diagmaster.
Frequently Asked Questions
What is Kubota code P0087?
Kubota P0087 means: Fuel Rail Pressure Too Low. Critical code -- stop operating until repaired.
Can I keep using my Kubota with P0087?
Critical fault -- do not operate; tow or trailer to a dealer. Use Kubota Diagmaster software (dealer tool) for full diagnostics.
How much does P0087 cost to fix on a Kubota?
Repair cost range: $20-$60 filter, $600-$1,500 HP pump. Compact-tractor labor is typically $110-$150/hr in 2026.
P0087 on Other Platforms
The same code ID appears across other engines, vehicles, and equipment. Diagnostic flow varies by platform — see the matching breakdown: