Instant Pot displays C8 and will not start pressure cooking.

Safety: Cancel the program and allow the unit to cool if hot.

• 1. Verify inner pot: Confirm you are using the original Instant Pot stainless steel inner pot designed for your specific model and size. Remove any aftermarket or mismatched pot.
• 2. Inspect for warping: Place the inner pot upside down on a flat countertop. If it rocks or you can see gaps, it is warped and should be replaced.
• 3. Clean contact surfaces: Remove the inner pot and wipe the bottom exterior and the heating plate with a dry, soft cloth. Remove any food, foil, or debris that could interfere with contact.
• 4. Reseat the pot: Place the pot back into the cooker, rotating slightly to ensure it sits flat and fully contacts the heating plate and center sensor.
• 5. Try a different pot: If you have another compatible Instant Pot inner pot, test with that. If C8 disappears, the original pot is defective.
• 6. If C8 persists with a correct, flat pot: The base sensor or detection circuit on the PCB may be faulty. Professional diagnosis and possible replacement of the sensor assembly or control board is required.