High Priority 96% confidence

Blower vents emit warm air when A/C is turned on

in Mazda 3 (2019-2024)

Symptoms

  • No cold air from vents
  • Weak cabin cooling
  • Irregular A/C operation
  • Frost or ice on pipes under the hood

DTC error codes

U0140:00

Verifying license...

A/C Technical Specifications

(BP)

Refrigerant: R1234yf Amount (g): 420-470g Oil: PAG YF ISO 46 Oil (ml): 110 - 140ml
See full specification

Other problems in 3

A/C cooling is weak and gradually loses performance

High Priority

Unusual noise and metallic grinding when A/C is on

High Priority

Air conditioning stopped cooling / no response to AC button

High Priority

No airflow from specific vents or clicking noise behind dashboard

High Priority

It is not possible to adjust the air supply temperature

High Priority

Have this problem?

Generate a personalized AI report for your Mazda 3 or book a workshop visit.

Generate AI reportSchedule visit