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.

Low severity. Can I keep driving?Yes, you can keep driving. The air conditioning may not work.

Most likely causes

Compressor motor bearing worn
Magnet flux degraded with age

What to check, in order

Start with the simplest. You can tick off each step.

Check the sensor pressure in live data
Compare the reading with other engine data while varying the engine speed.
Check the relay and connector
Have the refrigerant charge and any leaks checked at a repair shop authorized to handle refrigerant

Good to know

Repair difficulty: hard
It can trigger limp mode.

What each character of P2D44 means

P: Powertrain: engine and transmission
2: Generic code: same on every make
D: Subsystem depends on the code range
44: Specific fault in that system

Frequently asked questions

Can I keep driving with code P2D44?

Yes, you can keep driving. The air conditioning may not work.

What causes code P2D44?

The most common causes are: compressor motor bearing worn; magnet flux degraded with age.

Sources

Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.