Skip the auto shop - Our mechanics make house calls

Symptoms of a Bad or Failing Condenser Fan Relay

condenser fan relay

Bad or Failing Condenser Fan Relay Inspection

by a top-rated mechanic at your home or office

The condenser fan relay is the electronic relay that controls the power to the AC condenser cooling fan. When the relay is activated the AC condenser fan is switched on so that it can keep the AC condenser cool. The AC condenser is designed to cool down and condense incoming refrigerant vapor into cooled liquid and uses the fan to help keep it cool. The fan's power is controlled by the condenser fan relay. Usually a faulty condenser relay will display a few problems that can alert the driver that a potential problem has occurred and should be serviced.

HAVE SYMPTOMS OF CAR TROUBLE?
Get an $80 diagnostic
by a top-rated mechanic at your home or office.

Get a quote · Book an Appointment · Our expert mechanics come to you.

AC blows hot air

One of the first symptoms commonly associated with a fan relay is an AC that blows warm air. If the AC condenser fan relay fails, the AC condenser fan will not receive power and will not be able to cool the AC condenser. This may lead to a condenser that runs too hot and cannot cool the refrigerant enough for the AC to blow cold air.

HAVE SYMPTOMS OF CAR TROUBLE?
Get your car fixed at your home or office.

Get a quote · Book an Appointment · Our expert mechanics come to you.

Engine overheating

Engine overheating is another symptom of a potential problem with the condenser fan relay. The AC condenser serves as the heatsink for the AC system, and can get overheated quickly, especially on hot days. If the condenser fan relay fails and the disables the AC condenser fan, the condenser will not have any means to keep itself cool and can overheat. In severe cases, the overheating can spread to other parts of the vehicle and cause the engine to overheat, putting the engine and AC components at risk of damage.

The condenser fan relay is a simple relay, however, it plays a vital role in the proper operation of the AC system. If you suspect that your condenser relay may be having a problem, have the vehicle inspected by a professional technician, such as one from YourMechanic, to determine if the car needs to have the condenser fan relay replaced.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Still not sure about your car's issue?
Diagnose your car
What kind of issue are you experiencing?
Brakes are squeaking
Car is not starting
Car is overheating
Car is shaking (vibrating)
Fluids are leaking
Heating and A/C
Smoke or steam is coming out of the car
Warning light is on
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

P0121 OBD-II Trouble Code: TPS "A" Circuit Range Performance Problem
P0121 code definition Throttle Pedal Position Sensor/Switch (TPS) A Circuit Range Performance Problem...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
Insurance Requirements for Car Registration in Kentucky
The Kentucky Transportation Cabinet requires that all drivers in Kentucky carry liability automotive insurance, or “financial responsibility” in order to operate a vehicle legally and maintain vehicle...


Related questions

Q: Heating and air problem

Hi. In your owner's manual, you should find a picture and the location of the fuse panel. The manual will also give you the location of the blower motor fuse and relay. First, check to see if the fuse is...

Q: My AC is blowing hot air. No noises, but can not spin under the hood

Hi, thanks for writing in. I recommend checking the fuses and relays for the AC system and the auxiliary fan. The auxiliary fan is tied to the AC compressor, so when you turn on the AC from the dash controls,...

Q: When I turn ac on it overheats

Your car is equipped with an electric radiator fan. It should come on when the engine reaches a certain temperature. It should also come on immediately when you turn the air conditioning on. While on the move, the fan does...