PETKIT Pura Max 2 upper cover not closed even though it's shut
- Power off first — PETKIT requires the unit off before touching any covers.
- Reseat in order — cylinder, then litter sifter, then the magnetic side cover last — never the cover first.
- Clean the contact edge — wipe the cover's magnetic rim and where it seats with a dry cloth.
- Check for damage if it persists — a warped or cracked cover can prevent full contact even when perfectly positioned.
- "Upper cover not closed!" on the display — the alert shows even though the magnetic side cover looks fully shut from the outside.
- Cycles won't start — the litter box won't run its normal cleaning cycle while the alert is active.
- Not the same as other alerts — you've ruled out low litter, a full waste bin, and a cat in the detection zone — this message is specifically about the cover.
Nothing here stops your cat using the box. Fix it when you have a quiet ten minutes.
Why a closed cover can still trigger this
The magnetic side cover is the last piece in PETKIT's own reassembly sequence, and its electrical contact — not just how it looks — is what the sensor actually reads.
Reassembly order matters
PETKIT's manual reinstalls parts in a specific order: cylinder, then litter sifter, then magnetic cover last. If the cylinder or sifter is even slightly out of position, the cover can look shut without its magnetic contact fully engaging.
Dust on the contact surface
Litter dust settling on the magnetic contact edge can stop a correctly positioned cover from registering as closed — the same kind of buildup PETKIT flags for the proximity sensor on this unit, cleaned the same way.
In most cases, redoing the reassembly in the right order clears the alert in under ten minutes.
How to fix it
Work through Part A to reseat the parts in the correct order, then Part B to clean the contact if the alert is still showing.
Keep cleaning supplies on hand for routine maintenance
The same microfiber cloth and cotton swabs cover the cover contact, the base, and the proximity sensor.
If the issue persists: replacement options
If the alert returns immediately after a full reseat and a clean contact surface, the cover itself may be warped or its magnet housing cracked — physical damage that prevents full contact even when everything is perfectly positioned. PETKIT doesn't currently sell a standalone replacement side cover through our verified retail links, so this is a case for PETKIT support or warranty rather than a part swap.
As an Amazon Associate, Pet Infrastructure earns from qualifying purchases. We may receive a commission when you buy through our links, at no extra cost to you.
If reseating and cleaning don't clear the alert, the advanced section below helps rule out anything else it could be.
Advanced: telling this apart from other alerts
A quick reference for making sure you're troubleshooting the right message.
Five different alerts on the same display
PETKIT lists five distinct prompts for the Pura Max 2: insufficient litter, a full waste bin, a cat detected mid-cycle, a generic device failure, and "upper cover not closed." Each has its own trigger. If you're not certain the cover is the actual message on your display, double-check before working through this bulletin — a full waste bin or weight-sensor issue needs a different fix (see TB-PPM-006 for safety lockouts and weight sensor errors).
Why this bulletin frames the cause as a deduction, not a manual quote
PETKIT's manual confirms the alert message itself and the reassembly order (cylinder, then sifter, then cover) as separate, documented facts. The link between the two — that a wrong reassembly order causes this specific alert — is a reasonable deduction based on how the parts physically stack, not a sentence PETKIT's manual states outright. Worth knowing if the fix above doesn't resolve it on the first try.
Frequently asked questions
Why does my PETKIT Pura Max 2 say the upper cover isn't closed when it looks shut?
The magnetic side cover has to make full contact, not just look closed — if the cylinder or litter sifter underneath isn't fully seated first, the cover can appear shut without registering as closed to the sensor.
How do I reseat the magnetic side cover on a Pura Max 2?
Power off the unit, remove the cover, confirm the cylinder is locked and the litter sifter is fully clicked in, then refit the magnetic cover last, rotating it clockwise into place.
Is "Upper cover not closed" the same as a weight sensor error on the Pura Max 2?
No. They're separate alerts with separate triggers. Weight sensor and safety-lockout issues are covered in a different guide — see our bulletin on safety lockouts and weight sensor errors.
What order do the cylinder, sifter, and cover need to go back in?
Cylinder first, then the litter sifter, then the magnetic side cover last. Fitting the cover before the other two are fully seated is the most common cause of this alert.
Conclusion
"Upper cover not closed" on a Pura Max 2 is almost always a reassembly-order problem, not a broken sensor. Redo the cylinder, sifter, and cover in that order, clean the contact surface, and the alert clears; if it comes back right away, a damaged cover is the likely cause and a support case is the next step.
Still not fixed? Here’s what to do next.
Some faults are genuinely hardware, and no amount of cleaning or resetting will clear them. If you’ve worked through everything above and it’s still doing it, stop here rather than taking the unit further apart.
- Go to PETKIT directly. If the unit is still under warranty, let them replace the part rather than paying for it yourself — contact PETKIT support.
- Tell us what didn’t work. We rewrite bulletins when readers show us a case they don’t cover — compliance@pet-infrastructure.com. Tell us the model, what the lights are doing, and which steps you already tried.
- Ask other owners. Search Reddit for your model name plus the symptom (for example “PETKIT Pura Max 2 not cycling”). Someone has almost certainly hit the same fault, and owner threads often surface fixes before the manufacturer documents them.
When to stop and call the manufacturer: if the fix needs the base opened, the motor or control board touched, or any tool beyond a screwdriver — stop. On a unit in this price range, opening it yourself usually voids the warranty, and a warranty repair costs nothing.
Did this actually fix it? 🐾
The complete PETKIT Pura Max 2 bulletin library
Every PETKIT Pura Max 2 bulletin published on the site, in one place:
| Bulletin | Covers |
|---|---|
| TB-PPM-001 | PETKIT Pura Max screen not working — blank, black, or unresponsive OLED display? Start… |
| TB-PPM-004 | PETKIT Pura Max leaking odor from a gap between the waste drawer lid and the bin rim?… |
| TB-PPM-005 | PETKIT Pura Max or Pura Max 2 still smelling after a full clean? Urine pooling under… |
| TB-PPM-006 | PETKIT Pura Max 2 stuck on a safety pause or showing inaccurate weights? Learn to… |
| TB-PPM-007 | PETKIT Pura Max 2 dumping clean litter in the bin or leaving crumbs in the middle?… |
| TB-PPM-008 | PETKIT Pura Max 2 air purifier batteries dying within a week? It's not the battery… |
| TB-PPM-009 | PETKIT Purobot Max Pro litter sticking to the mat after every deep clean? Learn why… |
| TB-PPM-011 | PETKIT Pura Max or Pura Max 2 acting up? Match your exact symptom — screen, smell,… |
Written by Alberto Guardia
I’m a physician working in medical informatics, and I run Pet Infrastructure on my own — no team, no manufacturer sponsorship, no paid placements. I share my home with Wolfgang, a 13-year-old Chartreux with firm opinions about litter and none whatsoever about firmware.
How this page was put together. Every light code, button sequence and timing here is traced back to PETKIT’s own documentation, to official support articles, or to several owner reports that agree with each other — and the guide tells you which. Where something genuinely isn’t documented anywhere, I say so instead of filling the gap.
How I check every guide → · Last updated August 2026