Resmed CPAP Error 003 Error Code
Quick answer
This is a pressure sensor fault. It is possible that the CPAP needs to be recalibrated. If that doesn't solve the problem, then you will need a new main PC board. In either instance, it will need to be returned to a ResMed Authorized Service Center such as us for corrective action
Severity: high · DIY difficulty: intermediate
Safety
TBD - must be written per-code before publish
What Error 003 means
This is a pressure sensor fault. It is possible that the CPAP needs to be recalibrated. If that doesn't solve the problem, then you will need a new main PC board. In either instance, it will need to be returned to a ResMed Authorized Service Center such as us for corrective action
Code meaning varies by series
- AirSense 10 - Altra Service Professionals field reference (authorized ResMed service center): This is a pressure sensor fault. It is possible that the CPAP needs to be recalibrated. If that doesn't solve the problem, then you will need a new main PC board. In either instance, it will need to be returned to a ResMed Authorized Service Center such as us for corrective action
- AirSense 10 - ResMed official user guide: System fault, Error 0XX: an unrecoverable error has occurred on the device. Contact your care provider; do not open the device.
Causes, ranked
Causes not yet documented — verify against the service manual.
Parts & supplies for Resmed CPAP: filters, control boards, sensors, and common replacement parts.
Sources
- Altra Service Professionals (ResMed authorized service center) - ResMed AirSense 10 problems and numbered error-code field reference (Error 001-020) — verified 2026-08-29
- ResMed AirSense 10 device with humidifier - User Guide (Americas, official): Error 004 = hot environment/blocked filter/water in tubing - cool, replace filter, power-cycle; all other Error 0XX = unrecoverable device fault, contact care provider, do not open — verified 2026-08-29