Skip the auto shop - Our mechanics make house calls

How Long Does an Evaporator Temperature Sensor (Switch) Last?

Evaporator Temperature Sensor (Switch)

If you have air conditioning in your vehicle, which pretty much all modern vehicles have, then you have an evaporator temperature sensor (switch). This switch plays an important role in making sure the correct temperature is attained, and that it doesn't get too cold and then form frost on your evaporator core. This sensor can be found on the evaporator housing or the evaporator itself. Its purpose is to keep track of the temperature of the evaporator.

Once this part becomes faulty and is no longer working, it won't be taking the correct temperature readings. This means that either too little or too much refrigerant can be released into the evaporator, and create the wrong temperature. It’s a delicate balance of keeping that exact right temperature, so the temperature sensor is quite an important component. Now keep in mind this isn't a job you'll be able to do on your own, because air conditioning systems must be disposed of professionally.

If you are questioning whether or not your evaporator temperature sensor (switch) has reached the end of its life expectancy or not, here are some signs that it is need of replacement:

  • When you have the air conditioning running you may find that the air flowing through the vents is not keeping a steady temperature. It might get warmer, or colder, and just fail to remain steady. This is a good indicator that the evaporator temperature sensor has failed.

  • If your air conditioning is turned on but the air isn't flowing through the evaporator, it could be because it is frosted over. This is another good indicator that the sensor needs to be replaced.

  • Keep in mind the evaporator temperature sensor (switch) doesn't have a regular maintenance schedule, instead you just have to be aware of the failure signs to look for.

The evaporator temperature sensor (switch) is an important component when it comes to your vehicle’s air conditioning system. This part must be in good working order so you can maintain the proper and steady temperature. Should this part stop working, you’ll find the AC won’t be able to maintain a steady temperature, and frost can build on the evaporator itself. If you’re experiencing any of the above mentioned symptoms and suspect your evaporator temperature sensor (switch) is in need of replacement, get a diagnostic or book an evaporator temperature sensor (switch) replacement service with a professional mechanic.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
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

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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...
P2422 OBD-II Trouble Code: Evaporative Emissions Control System (EVAP) Vent Valve Stuck Closed
Diagnostic Trouble Code (DTC): P2422 P2422 code definition Evaporative Emissions Control System (EVAP)...


Related questions

Q: have replaced crankshaft sensor twice in one week? what can be causing this?

In your circumstance, there are a few failure modes that could potentially apply: If the crankshaft has a heavily worn main thrust bearing, the crankshaft will move around and the thin metal plate running through the crank sensor can repeatedly...

Q: Air conditioner fan doesn't work.

Hi. I think you are referring to the blower motor. Looking at the wiring diagram for your vehicle, I see the problem could be with the motor itself, the processor, or the circuit. There is a 40 amp fuse you...

Q: Can I Use a Universal Switch in My Car?

This is an open ended question when determining what exactly a universal switch really is. Many switches whether factory or OEM (original equipment manufacturer) replacements are designed to meet or exceed the original specifications. Some factors to keep in mind...