P2D44
A/C Compressor Motor Performance
The electric A/C compressor motor does not deliver the expected speed or torque for the commanded duty. Bearing wear, magnet aging, or load mismatch.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: hard
Common causes
Ordered by how often each turns out to be the cause.
- Compressor motor bearing wornCommon
- Magnet flux degraded with agePossible
Parts involved
- AC Compressor Motor
- ECM
P2D44 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.