Model Handbook

Ninja foodi pressure cooker leaking steam

Cause 1 of 2The pressure release valve is not in the SEAL position. Source: Troubleshooting Guide: The unit is hissing and not reaching pressure, p. 22

First checkTurn the pressure release valve to the SEAL position.

Causes and checks

  1. The pressure release valve is not in the SEAL position. Source: Troubleshooting Guide: The unit is hissing and not reaching pressure, p. 22

    1. Turn the pressure release valve to the SEAL position.

  2. A loud hissing noise after the valve is in SEAL may mean the silicone seal is not fully in place. Source: Troubleshooting Guide: The unit is hissing and not reaching pressure, p. 22

    1. Press START/STOP to stop cooking, turn the valve to VENT as necessary, and remove the pressure lid. See Remove the pressure lid.
    2. Press down on the silicone ring so it is fully inserted and lies flat under the ring rack. You should then be able to tug lightly on the ring to rotate it. See Remove and reinstall the silicone ring.

Service

If the checks above do not clear it, contact SharkNinja Customer Service: 1-877-646-5288, ninjakitchen.com/support. North America. Source: Troubleshooting Guide; Warranty, pp. 23, 25

Other OS401 problems

Sources

  1. OS401 Owner's Guide: Foodi 10-in-1 8-QT XL Pressure Cooker. SharkNinja Operating LLC. Document OS401_IB, revision MP_REV_Mv12, 25 pages, en. ninjakitchen.com. Listed on the manufacturer's support page. Retrieved 13 November 2026.

Page numbers are the numbers printed in the manual. Where this page and the manual differ, follow the manual.

Applies to
OS401. North America.
Source
OS401 Owner's Guide: Foodi 10-in-1 8-QT XL Pressure Cooker, OS401_IB revision MP_REV_Mv12
Last verified
Handbook
Ninja Foodi 10-in-1 8-qt XL Pressure Cooker in Multicookers and pressure cookers; all Ninja handbooks