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FANUC Alarm PNT1-799 — Pump 2 IN low pressure fault

Manufacturer wording — %sPump 2 IN low pressure fault
The manual prints placeholders; your controller fills them in with the real group, axis or number.

FANUC PNT1-799 (“Pump 2 IN low pressure fault”): Pump #2 inlet pressure has been below the low fault limit for a user configurable period of time. First check: Check the following:

Updated 2026-09-17 · LogrobotLM reference

Description

Pump #2 inlet pressure has been below the low fault limit for a user configurable period of time. This condition is usually caused by one or more of the following:

Remedy

Check the following:

Related codes

PNT1-791Pump 1 totals differ > tolerancePNT1-798Pump 2 IN low pressure warningPNT1-800Pump 2 IN high pressure warningPNT1-801Pump 2 IN high pressure fault

Indicative field information — the robot manufacturer's manual and safety procedures always prevail. Never bypass a safety device; apply lockout/tagout (LOTO) before any physical intervention. How this reference is built →