check engine light?

Question

I have a 2000 chrysler cirrus with a 2.4L engine. Recently the check engine light has come on. I checked it with my OBD 2 scan tool and it gave me this code P0125 - " Insufficient coolant temperature for closed loop fuel". What does this mean??

I have a book and all but doesnt really help to much. Ive read other questions on here relating to this and they say generally the thermostat is the problem. Well i already have a new one and is installed properly. Ive been having problems with my car leaking antifreeze. That could be the problem? Theres also a problem with the coolant gauge. It never moves and when it does the car is about to overheat and fans come on. Does anyone know what the problem is or maybe more of what P0125 means besides theromstat problem? Thanks for reading.

Answer 1

well, seeing as how u have a scan tool, u can reset the light without messing with the battery. I would replace the coolant temp sensor (located on the thermostat housing...i believe. should be able to get one at autozone or comparable. don't forget to replace the thermostat while your there and the teflon tape for the sensors threading. then, u can reset the light! Good luck!

Answer 2

(Check Engine Light)

There are many components that work together in the engine to maintain optimal engine performance and economy.

A service engine soon, or check engine light indicates that there is a sensor that is reading a condition that is "out of range".

Simply resetting the light does not solve the initial cause of the problem.

Replacing a number of parts trying to troubleshoot the problem in the hopes of getting the light to stay off is a tremendous waste of time and money.

The simplest, and most economical way to alleviate your issue, is to have an engine diagnostic done by a reputable shop to determine what caused the computer to signal you to begin with. Just reading the computer codes may not find the "cause".

That being said, if per-chance you feel the need to reset the light in the hopes that it was a "glitch" of some kind, you could disconnect the negative battery terminal for a couple of minutes to clear the check engine light. (ignition key turned on)



ADDED:

There are TWO sensors for the engine temperature.

The gage, and the computer.



Change the ECM coolant temprature sensor, and it should be fine.

Answer 3

Nothing to do with fluids. Flashing means you are misfiring and that's something that may be serious. A scan of the code at this point will just tell you what cylinder is misfiring and I bet there's more than one. Did you put lower grade gas? That and the heat could cause this. It could also be a bad fuel filter, bad spark plugs or bad injectors. Happens a lot as the weather starts to get hot out. I would go have the car checked out because there are many possible causes and it could get costly replacing parts that may not fix the problem. You might get lucky but it's best to have it taken care of and stop driving if it continues as misfiring can damage the engine easily.

Answer 4

the pcm supplies the coolant temp sensor with a 5 volt reference voltage. the pcm has a range of voltages that it looks for and when the pcm does not get the correct voltage that the pcm is looking for is gives a trouble code. if the coolant level is correct, check to see if you have a 5 volt reference on one wire of thhe plug. if the 5 volts is there then replace the sensor and clear the code. this should take care of your problem

Answer 5

Forget the code, the gauge, the fans.....its leaking coolant.....start there.....fill and pressure test system and determine needed repair....g/l

Answer 6

visit www.obd-codes.com

www.samarins.com

these two sites may be of help. If not, try Pat Goss of PBS Motor Week/PBS TV at www.patgossnews8.com or www.goss-garage.com

Answer 7

not enough or either wrong brand coolant

Answer 8

Take it to the dealer. This is why they can rip you off, because you just don't have a clue.