Bambu Lab P2S Combo: problems, parts and running costs

Checked: 2026-10-05

Summary

The P2S Combo is an enclosed 256 x 256 x 256 mm printer rated at 600 mm/s with a 300 °C hardened-steel nozzle, bundled with one AMS 2 Pro that adds four-spool printing and active-vent filament drying. The main limitation to plan around is that it has no active chamber heating: the “50 °C chamber” wording on the product page describes what the enclosure can hold, not a heated chamber, so chamber temperature is managed passively with a flap that switches between internal and external circulation. Yearly running cost is dominated by filament, carbon-filter replacement and AMS drying electricity, and no price data, warranty length or independent test could be confirmed for this model, so treat the value question as open until a price source is in hand.

Common problems and fixes

No active chamber heating — Bambu Lab’s FAQ states the P2S does not heat the chamber, even though the product page headline reads “50 °C Chamber Ready For Engineering-Grade Filaments”; the enclosure holds heat passively and an automatic flap switches between internal and external circulation. Workaround is to dry and condition filament in the AMS 2 Pro and print engineering materials with the door closed, and to read the 50 °C figure as an enclosure-capability claim rather than a heated-chamber spec. Warranty coverage is not published in the sources. [1][3]
Drying blocks printing, and extra drying units need extra adapters — with a single AMS 2 Pro on the 6-pin cable the printer can dry while in standby, print functions pause while drying runs, and drying more than one AMS 2 Pro at a time requires additional official Bambu Lab power adapters (AC 100-240 V in, 24 V / 4 A / 96 W out). Plan drying into idle time, or budget for one adapter per extra unit. [3]
Nozzle and extruder clogs — Bambu Lab publishes nozzle-unclogging and extruder-clog-cleaning procedures, and a 2 TOPS NPU runs computer-vision checks for nozzle clumping, spaghetti failure, purge-chute jams and start conditions. No failure rate is published; treat these as documented service topics rather than known-frequent faults. Fix is the published cleaning route plus the one-clip hotend release, which the manufacturer claims cuts a nozzle change to about 30 seconds. Warranty coverage is not published in the sources. [1][4]
Filament grinding in the extruder — the DynaSense servo samples at 20 kHz to detect grinding and clogs during a print, and the manufacturer notes detection accuracy varies by filament type, so brittle or carbon-filled spools are the ones to watch. Reduce force with slower feeds, or switch filament. [1]
Axis friction and belt tension drift — the wiki documents XYZ-axis cleaning and lubrication, idler-pulley tensioning and belt tensioning as routine maintenance. Periodic re-tensioning and cleaning is the documented fix. Warranty coverage is not published in the sources. [4]
Eddy-sensor and flowrate drift — active flowrate compensation is driven by an eddy-current sensor that the wiki documents how to adjust. Re-adjust the sensor if extrusion compensation looks off after a crash or a sensor knock. [1][4]
Bed levelling drift — bed tramming is documented as a user procedure on a flexible steel plate with a textured PEI sheet. Re-tram after swapping plates. [4]
Older XPA-series build plates lose plate recognition — they still fit physically, but the P2S plate type-recognition function does not work with them, which affects first-layer or temperature presets. Use the textured PEI, smooth PEI or Cool Plate SuperTack plates the printer is designed for. [3]
Third-party slicers lose advanced features — Super Slicer, PrusaSlicer and Cura work through standard G-code export, but some advanced features may not, so time savings from third-party slicing are limited. [2]
No wired network or network isolation — dual-band Wi-Fi only, with no Ethernet, no network kill switch, no removable network module and no 802.1X access control. On a segmented or managed network, put the printer on an isolated SSID or VLAN. [2]

Parts and consumables

No US part or consumable prices could be read for this model, so no store or month-year can be attached; the parts below are the ones Bambu Lab documents as user-replaceable. Spare part and filter pricing in the US is unconfirmed.

Activated carbon air filter — listed in the chamber filtration path (activated carbon, VOC and particulate filtration) and covered by a published replacement guide. Replace when airflow drops or the chamber smells; no interval or price is published. [2][4]
Nozzles (0.4 mm included; 0.2 / 0.4 / 0.6 / 0.8 mm supported) — hardened-steel nozzles, compatible with H2D nozzles and not with A1 nozzles. Replace on clogs or wear; no price published. [2][3]
PTFE tubes — separate printer and AMS 2 Pro replacement guides exist. Replace when filament path is blocked or after a cold-pull jam; no price published. [4][5]
Purge wiper assembly and nozzle wiping pad — both are documented as separately replaceable. Replace when purging smears or residue builds up; no price published. [4]
Idler pulleys, belts, anti-vibration feet — each has a documented replacement or tensioning guide. Replace belts and pulleys when tensioning can no longer hold alignment; no price published. [4]
AMS 2 Pro drying unit — the newest and least-proven part of the bundle, and the AMS 2 Pro wiki publishes it as a standalone replacement. No price published, and its failure modes are not documented. [5]
AMS 2 Pro feeder unit, filament funnel and internal hub motor — each is documented as separately replaceable, and the AMS 2 Pro set also covers top lid, bottom cover, power board, mainboard, switching adapter, 6-in-1 cable pack and air intake/vent assembly. No prices published. [5]
Filament — PLA, PETG, ABS, ASA, TPU and fiber-reinforced variants including PLA-CF, PETG-CF, ABS-GF, ASA-CF, PA6-CF, PA6-GF, PAHT-CF, PPA-CF and PET-CF. 1.75 mm diameter with a built-in cutter; no price published. [2]

Yearly running cost

Not enough data. No price, electricity-rate or filter-price source was readable for this model, so a yearly total cannot be computed. The cost lines that are structurally present are filament, the carbon air filter, desiccant and purge waste from multi-color printing, and the extra electricity the AMS 2 Pro draws while drying, which non-drying AMS units do not add. The AMS 2 Pro’s own power draw was never published in the sources, so even the drying component of the electricity cost is unknown.

When it is a good buy

Price thresholds cannot be set from the available evidence: the US store front page is JavaScript-rendered and returned no product titles or prices to a plain fetch, and no non-Amazon retailer price page was read. The US warranty length is also unconfirmed, because no US warranty page was readable, and the two-year warranty seen on the Canadian storefront does not transfer to US purchases. What can be said structurally:

The Combo makes sense when you want an enclosed machine with multi-material and drying in one box, since it bundles the enclosed P2S with a four-spool AMS 2 Pro and the P2S is positioned as an evolution of the P1S rather than a new class of machine.
The bare P2S is the cheaper path when you print one material and do not need drying or multi-color, at the cost of filament odometry and the 2-in-1 buffer, which the spec sheet lists as supported with AMS rather than standalone.
An AMS HT unit is the relevant add-on if you need high-temperature drying, since the P2S accepts up to four AMS 2 Pro plus four AMS HT units for 20 slots and up to 20 colors.
Skip the Combo if your network is managed, because there is no Ethernet, no network kill switch and no 802.1X support, and if you need a heated chamber, because there is none.
XPA-series build plates from earlier models still fit but lose plate type recognition, which is a reason to price fresh plates into any purchase.