1999 Toyota Camry fan will not turn on, code po115 on my co

did you bypass the relay to see if the fans worked from there?

fans all work code po115

can my ac presure switch be bad.

when i pull the relay in and out the fan will work but turns back off when it is back in place.i did a oms test on my ac presure switch plug is good but switch will not read on or off.

First off. Do you have a scanner that can read data? Second, did you unplug the coolant temp sensor?
If you clear the code what does the coolant temp sensor read? When the vehicle oerheats, how long does it take? What temperature does it go to? Anymore than 220F is bad. When it does overheat, are both radiator hoses hot and are both heater hoses hot? Are you getting a control the relay(s) when the vehicle starts to overheat. i am assuming that you unplugged the coolant temp sensor and both fans came on?

yes have scanner,car never overheated the fan just will not come one.when car gets to hot i turn on ac cooldown then i checked all wires coming in to temp sensor all read 12volt fans to when i cleared all codes and rechecked po115 came up but i did not check with plug off temp sensor.the lower hose is cooler then upper hose and yes i unplug temp sensor so fans come on.

yes i just replaced radiator today

i just ran car lower hose is cool upper is very hot what can that be.that is why my fan will not work the temp on the bottom will not go up.and the top is to hot is it the water pump.

I am thinking you might have thermostat sticking or lack of circulation. I would start with a thermostat and flush everything out. Make sure you get all the air out.

how do i get air out

fill it up with coolant and put the radiator cap back on. run it until at 2000rpm until it goes 3/4 full temperature overheat. Shut vehicle off until there is no pressure on the system(feel upper radiator hose). Repeat. Also, make sure you are getting heat out of your vents. This is a good indication that there is flow.

air is out hot when i turn heater on very hot but that bottom hose how hot should it be like top because it is warm to the touch.and the fan will not come on still.

what's the hottest that this car has gotton so far? What does the scanner say for temperature when the gauge on the cluster says 1/2 hot?

have not check on scanner but the gauge has gone 3/4 of the way up 1/4 from hot when i turn a/c on it will come down

what to look for

make sure that when your gauge on the cluster is 1/2 hot that your scanner for coolant temperature reads about 200F.