E5 error appears when trying to start a pressure program; cooker may not build pressure.

Safety first: Ensure the unit is cool and depressurized before opening the lid.

• Inspect sealing ring: Remove the silicone sealing ring from the lid. Check for cracks, hardening, deformation, or food buildup. Clean with warm soapy water, dry, and reinstall evenly. Replace if worn.
• Check steam valve position: Make sure the steam release knob is set to the correct pressure position (not venting) before starting a pressure program.
• Clean lid components: Remove the inner lid plate and anti-block shield. Clean all steam passages thoroughly to ensure proper sealing and pressure buildup.
• Check for lid damage: Look for warping or cracks in the lid or inner lid plate that could prevent sealing. Replace damaged parts.
• Test with water only: Add at least the minimum required water and run a short pressure program. If E5 persists and no steam leaks are visible, the pressure sensor or control board may require professional service.