How often do you have to replace the Humidity sensor?

[Stefan N]

How often do you have to replace the Humidity sensor?

I think it is time for my second one i 8 year of ownership of my 2015 RAM sport.

It is looking like the sensor is still in verions one too " 68440808AA " or have they changed part number completely

 

[TradesmanGuy]

There is a humidity sensor???

 

[Stefan N]

There is a humidity sensor???

It sits up in the windsreen just right of the mirror



Pics from my last time I was in there (2019)

 

[seems fishy]

It is lifetime ,I think

 

[Sherman Bird]

There is a humidity sensor???

Yes! After all, one must know how wet our family is! It's known as Relative Humidity!

 

[GeauxinUp]

There is a humidity sensor???

I could be wrong, but I think they're only in trucks with the auto-A/C

 

[Stefan N]

It is lifetime ,I think

So just my bad luck then Or it don't like the Swedish weather

 

[seems fishy]

How is the weather in Sweden today? Nothing lasts forever,but I wonder what your issue is based on why you think the sensor is KAputt? Any code?
Maybe your interior has moisture coming in the truck as in a leak,from somewhere?

 

[David H]

So just my bad luck then Or it don't like the Swedish weather

Never heard of anybody replacing one. What are your symptoms leading you to believe the sensor is bad?

 

[Stefan N]

Never heard of anybody replacing one. What are your symptoms leading you to believe the sensor is bad?

Same as last time, the climate control does not cool the cabin down on auto and you need to turn the fan on max to cool the cabine down.

Ac system got a service last year and it hade lost 50grams of R1234yf sins 2015

How is the weather in Sweden today? Nothing lasts forever,but I wonder what your issue is based on why you think the sensor is KAputt? Any code?
Maybe your interior has moisture coming in the truck as in a leak,from somewhere?

Winter a round 0°C / 32°F and 20°C / 68°F in summer is Stockholm

I have not checked code this time

I hade a rear window leak 2 years ago, could be that

 

[crash68]

I could be wrong, but I think they're only in trucks with the auto-A/C

This is correct, it's only in the truck with the Auto Temperature Control
There is also a solar sensor on the dashboard the ATC trucks have

Same as last time, the climate control does not cool the cabin down on auto and you need to turn the fan on max to cool the cabine down.

Ac system got a service last year and it hade lost 50grams of R1234yf sins 2015

I doubt the AC not cooling the truck is a result of the windshield dew point sensor not working. It's usually the opposite problem where the AC compressor doesn't turn off.
If the 50 gram leak wasn't found, it's probably become worse. That was about a 10% loss of charge probably borderline of effecting performance.

 

[Stefan N]

I doubt the AC not cooling the truck is a result of the windshield dew point sensor not working. It's usually the opposite problem where the AC compressor doesn't turn off.
If the 50 gram leak wasn't found, it's probably become worse. That was about a 10% loss of charge probably borderline of effecting performance.

It was the same the first time the Sensor was bad, to hot i cabin

Checking codes are more expensive than replacing the sensor here in Sweden. So ordered a sensor and will be back with results

Edit: the AC machine did not detect any leake during service

 

[SitKneelBend]

I could be wrong, but I think they're only in trucks with the auto-A/C

Correct

 

[SitKneelBend]

It was the same the first time the Sensor was bad, to hot i cabin

Checking codes are more expensive than replacing the sensor here in Sweden. So ordered a sensor and will be back with results

Get AlfaOBD, check codes yourself (plus a lot more like diagnosing a bad sensor). I've found these sensors to be temperamental. I've had brand new ones not work in my truck but work in my wife's van (but hers works in my truck).

 

[Stefan N]

I almost ordered a Dorman one, but I feel like sensors you should go with OEM for reliability sake.

 

[SitKneelBend]

I almost ordered a Dorman one, but I feel like sensors you should go with OEM for reliability sake.

I tried the cheap amazon ones and they didn't work in a 2014 Ram or a 2022 Pacifica.

 

[Stefan N]

I tried the cheap amazon ones and they didn't work in a 2014 Ram or a 2022 Pacifica.

Thank you for that information!

 

[04fxdwgi]

I almost ordered a Dorman one, but I feel like sensors you should go with OEM for reliability sake.

When mine went bad, used a Dorman to replace. That didn't work, so replaced that with a Mopar. Still didn't work. Come to find out it was the return (ground) pin on the connector. Repaired it and all is good. Dorman still sitting in the box if anyone wants it.

While it was bad, everything seemed to work OK, except the Auto AC not cycling the the defrost heat and AC to keep the windshield fog free.

Firmly believe that getting something, like window cleaner, in that spot, it messes up the contact area for the sensor and sensor function goes south.

 

[SitKneelBend]

When mine went bad, used a Dorman to replace. That didn't work, so replaced that with a Mopar. Still didn't work. Come to find out it was the return (ground) pin on the connector. Repaired it and all is good. Dorman still sitting in the box if anyone wants it.

While it was bad, everything seemed to work OK, except the Auto AC not cycling the the defrost heat and AC to keep the windshield fog free.

Firmly believe that getting something, like window, cleaner in that spot, it messes up the contact area for the sensor and sensor function goes south.

The symptom of a bad one often go unnoticed but it actually causes the A/C compressor to run non-stop when that sensor goes, anytime HVAC is called for (even on max heat).

 

[Sherman Bird]

When mine went bad, used a Dorman to replace. That didn't work, so replaced that with a Mopar. Still didn't work. Come to find out it was the return (ground) pin on the connector. Repaired it and all is good. Dorman still sitting in the box if anyone wants it.

While it was bad, everything seemed to work OK, except the Auto AC not cycling the the defrost heat and AC to keep the windshield fog free.

Firmly believe that getting something, like window, cleaner in that spot, it messes up the contact area for the sensor and sensor function goes south.

I have a customer who owns a 2016 Mazda CX5. It has an auto A/C unit. She is a tad chubby! (Is that PC???)
Her A/C light would flash and the cooling of the system would diminish... not to the point of failure; just not with that "EDGE" that normally existed.

After lots of rutzafrutzing on my part, in that there really was no pathway such as a DTC or 3, I figured out that the light flashing was that the recirculation door was intermittent.

I removed the glove box and the cabin filter and observed the action of the recirc door... and, wouldn'tcha know, it worked flawlessly and the light was steady. Hmm.. I notice that the wires running to the actuator were literally no bigger than a sewing thread, and the plug was so little, that I had to use bright light and a magnifying glass to inspect the connector and drag test the pins. Never mind that I'm a old fart!

I cleaned the connector on both sides with "Deoxit", although they appeared to be clean. Problem went away. Go figure.
Perhaps this could help someone in their journeys through high tech stuff!