Question about 2003 Toyota Highlander
First, I highly doubt that the two problems are related. The code P0440 is associated with the EVAP system. In many cases, this code is set when the gas cap is not securely tightened or its sealing gasket has failed. Replacing the gas cap is a quick, cheap fix. If that doesn't resolve the problem, you either have a leak in the EVAP system tubing or the purge solenoid has failed. The EVAP system is supposed to create a vacuum to siphon gas fumes from the fuel system to a purge canister. Periodically, the purge solenoid opens and allows these fumes to be routed to the engine and burned. Look at this link for an explanation: http://www.obd-codes.com/p0440
Posted on Oct 11, 2013
The code can be found in a repair manual u can look it up.that`s probly what made your check engine light come on.the code most likely is a sensor that needs to be replaced.the switch on your temp dial is just possibly a bad switch.I don`t think the two r connected at all.
Posted on Oct 11, 2013
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Posted on Jan 02, 2017
SOURCE: Frequently loss the coolant and
You are losing coolant if you have a coolant pressure tester follow the directions and use it. If you don't when the car is cool use a 50/50 solutuion of water and coolant fill system and check all the listed items carefully with a flash light and look for leaks. It is either a bad hose, cap, water pump or radiator. Your coolant circulates through the dash and the blower blows throught the heater core to produce heat. No coolant no heat. I would also check the passanger side floor for anti freeze or moisture could be a leaking heater core also.
Posted on Nov 02, 2008
p0440 code means that the evap system has a leak. This could be caused by a bad or improperly installed gas cap. Either that or the purge solenoid has failed or the canister is plugged and not working properly.
Posted on Nov 15, 2008
It's usually broken solder joints on a cable behind, and feeding, the temperature knob.
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Posted on Jan 21, 2009
if you are refuring to the yellow check engine light. thats an emmision control light, it's not related to
oil or water capacity. it has only to do with emmision control devices. if the light is on steady. bring it to your mechanic and have him or her pull codes from your on board computer as soon as possible. if the light is flashing bring it to them now. stop driving the car or damage will be done to your cars converter.
good luck chris
Posted on Mar 22, 2009
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Posted on Apr 19, 2009
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