The next three steps show how to test the high pressure sensor more extensively. You should check this sensor if you get a C6 or C6H error.

If you don't have a "duo" pressure cooker, you will only have one pressure sensor, and it's this high pressure one.

Make sure the pressure cooker is unplugged from the outlet.

Use pliers or your fingers to lift and disconnect one of the sensor's spade connectors from the circuit board.

These connectors can be stubborn. Gently wiggle the connector as you pull to loosen it.

This disconnects the sensor electrically, so we can do a continuity test.