Under certain high humidity climate operating conditions, a musty odor may develop. The odor develops due to a microbial growth in the evaporator area. This odor is generally temporary. As the climate conditions change, the condition will disappear. If the mold/mildew odor persists refer to Odor Correction for the odor elimination procedure.

A musty smell.

Mold/mildew growth exists in the evaporator fins.

Clean the evaporator fins. Refer to Odor Correction and/or Air Conditioning Evaporator Core Replacement .

A clog exists in the evaporator drain.

Clean the evaporator drain.

Interior water leaks exist in the body.

Seal the body.

A coolant smell.

A coolant leak exists.

Inspect the heater hoses and the core for leakage. Refer to Heater Hoses Replacement and/or Heater Core Replacement .

A refrigerant oil smell.

A refrigerant leak exists at the evaporator.

Inspect the evaporator and the fittings for refrigerant leakage. Refer to Leak Testing .