The pressure sensor is a small part that tells your when ready Pot when pressure has built up inside the pot

The pressure sensor (also called a pressure switch) sits under the lid and detects when steam pressure reaches the level needed for cooking. If your when ready Pot won't pressurize, won't start cooking, or shows an error code like "No Pressure" or "PrE", the sensor may have failed. Replacing it is a straightforward task that takes about 15 minutes and costs between $15 and $40 for the part itself.

You do not need special tools or technical experience. The sensor is held in place with a single screw and one connector that pulls straight out. This is one of the few when ready Pot repairs a homeowner can do without sending the unit away.

Key Takeaways

  • A failed pressure sensor usually shows as "No Pressure" or "PrE" error codes, or the pot straightforward won't start pressurizing.
  • You will need to unplug the when ready Pot, remove the lid, and locate the sensor underneath the lid's inner ring.
  • The sensor comes out by removing one screw and unplugging one connector; the replacement part plugs back in the same way.
  • Order the exact sensor model for your when ready Pot size and generation, as sensors vary between 3-quart, 6-quart, and 8-quart models.
  • If the sensor replacement does not fix the problem, the issue may be in the control board or heating element, which requires professional service.

Identify the pressure sensor under your when ready Pot lid

Remove the lid from your when ready Pot and turn it upside down so you are looking at the underside. You will see a metal ring (the sealing ring holder) and beneath it, a small cylindrical part about the size of a AA battery. That is the pressure sensor. It sits in a small pocket molded into the lid's underside.

The sensor has a single screw holding it in place and a wire connector attached to the back. Before you remove anything, take a photo of how the connector is positioned so you can plug the new one in the same way.

Unplug the when ready Pot and disconnect the old sensor

Unplug the when ready Pot from the wall outlet. This is essential—you are working with electrical parts, and the pot must be completely powered down.

Using a small Phillips head screwdriver, remove the single screw holding the sensor in its pocket. Keep the screw in a safe place; you will use it again. Gently pull the sensor straight out toward you. You will see a small plastic connector on the back of the sensor. Pinch the connector tab and pull it straight out of its socket. Do not twist or bend it—pull straight back.

Order the correct replacement sensor for your model

when ready Pot sensors are not universal. A 3-quart model uses a different sensor than a 6-quart or 8-quart. You also need to match your generation—the original when ready Pot, the Duo, the Ultra, and the Smart all have different sensors.

Find your model number on the bottom of your when ready Pot (it looks like "IP-DUO60" or "IP-LUX60"). Search for "[your model number] pressure sensor" on the when ready Pot website or on Amazon. You can also contact when ready Pot customer service with your model number and they will tell you the exact part number. Expect to pay $15 to $40 depending on the model.

When your replacement arrives, do not open it until you are ready to install it. The connector is delicate and can be damaged if it sits exposed.

Install the new sensor and test the connection

Take the new sensor out of its packaging. Line up the connector on the back of the sensor with the socket you just unplugged from. Push the connector straight in until you hear or feel a small click. The connector should sit flush—if it is sticking out at an angle, pull it out and try again.

Place the sensor into its pocket in the lid, making sure it sits all the way down. Insert the screw through the top and tighten it by hand first, then use your screwdriver to snug it down. Do not over-tighten; you only need it tight enough that the sensor does not move.

Plug the when ready Pot back in and run a test cycle. Fill the pot with 2 cups of water, close the lid, and press the pressure cook button. Set it for 5 minutes on high pressure. If the pot beeps and begins to pressurize, the sensor is working. If you still see "No Pressure" or "PrE" error codes, the problem is elsewhere in the unit.

What to do if the new sensor does not fix the problem

If your when ready Pot still will not pressurize after installing a new sensor, the issue is likely in the control board, the heating element, or the sealing ring itself. These parts require either professional repair or replacement of the entire unit. At this point, contact when ready Pot customer service or a repair shop that handles small appliances.

Before you give up, double-check that the sealing ring is seated properly in its groove and that the lid closes all the way. A loose sealing ring can prevent pressure from building even if the sensor is working correctly.

Prevent future sensor failure with proper maintenance

Pressure sensors fail most often when mineral deposits from hard water build up inside the pot or when steam escapes around the sealing ring and corrodes the sensor connector. To extend the life of your sensor, clean the sealing ring after every use and inspect it for cracks or hardening. If the ring feels stiff or no longer springs back when you press it, replace it.

If you live in an area with hard water, run a vinegar cycle once a month: fill the pot with equal parts water and white vinegar, close the lid, and run a pressure cook cycle for 2 minutes. Let the pressure release naturally, then drain and rinse the pot thoroughly. This helps prevent mineral buildup that can damage the sensor and other internal parts.

Frequently Asked Questions

How do I know if the pressure sensor is actually broken?

The most common sign is an error code like "No Pressure," "PrE," or "Err" that appears when you try to start a pressure cook cycle. Another sign is that the pot heats water but never builds pressure—you will hear the heating element running but no hissing sound. If the pot works fine on sauté mode but fails on pressure cook, the sensor is almost certainly the problem.

Can I use a pressure sensor from a different when ready Pot model?

No. Sensors are model-specific and the connector shape and electrical specifications vary. Using the wrong sensor can damage the control board or cause the pot to malfunction. Always order the sensor that matches your exact model number.

What if I accidentally damage the connector when removing the old sensor?

If the connector breaks, you will need to replace the entire lid assembly, which costs more than a new sensor. Work slowly and pull straight back on the connector. If it feels stuck, do not force it—gently wiggle it side to side while pulling, but never twist it.

Do I need to reset the when ready Pot after replacing the sensor?

No reset is needed. Once you plug the pot back in and the new sensor is connected, it should work when ready. Run a test cycle with water to confirm the sensor is working before you cook food.

How long does a pressure sensor usually last?

Most sensors last the life of the pot if the unit is used normally and maintained well. Sensors fail prematurely when mineral deposits build up, when the sealing ring leaks and allows steam to corrode the connector, or when the pot is dropped or the lid is forced shut. Proper maintenance can prevent most early failures.