High-pitched squealing or whistling noise from the lid during pressure cooking.

Safety first: Do not cover the steam release area. Keep clear of steam.

• Observe venting: If the noise coincides with visible steam from the valve, it is usually harmless but can be reduced.
• Clean valve: After cooling, remove and clean the steam release valve and anti-block shield.
• Check sealing ring: Ensure the ring is properly seated and not twisted, which can create small vent gaps.
• Replace worn parts: If the noise persists and is very loud, consider replacing the steam release valve and sealing ring.