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Discussion Starter #1
so this morning i get in my car to go to school and the CEL comes on...

my car has almost 43k miles on it...i have a catback exhaust and a DIY intake (that has been on the car for 9 months with no problems at all) and pnp hids that have been on the car for a month with no problems

the car feels pretty much normal when i drive and i put like 15 miles on it today...i then got the CEL scanned at autozone and two things came up

1 Cooling system malfunction...probable cause (says the printout) open or short circuit condition, poor eletrical connection, low coolant level, defective thermostat, faulty ECT sensor

2 IAT sensor circuit high voltage...probable cause open or short circuit condition, poor electrical connection, faulty IAT sensor

can anyone help me with this problem? i think i am going to have to take it to the dealer unless i find a honda specialist shop in the area...do you think it has anything to do with my mods? should i take them off if i go to the dealer? can i be driving the car around in this condition?

any help would be greatly appreciated
 

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IAT sensors aren't hard to change, IIRC. What's your temperature gauge say, and is it running hot (not by the gauge..are was your coolant boiling over?)

Gimme some details (year/make/model/engine/exact troublecodes) and i'll pick around and see what I can find out. I would *not* take it to the shop. Sensors like that are typically* easy


*of course it might be in a stupid location like the crank sensor on a Maxima
 

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Discussion Starter #3
temperature is fine/normal...right in the middle when at operating...no different than before

its a 2006 Civic LX sedan manual...the codes on the printouts are P0113 and P0128
 

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That IAT sensor is easy to change. It's the MAF. :) Clean that sucker with some MAF cleaner spray first (they sell it at the same Autozone for like $3.99 a can)

That other code is easy too. Your thermostat is stuck open.
 

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Discussion Starter #6
That IAT sensor is easy to change. It's the MAF. :) Clean that sucker with some MAF cleaner spray first (they sell it at the same Autozone for like $3.99 a can)

That other code is easy too. Your thermostat is stuck open.
how do i fix the thermostat? i can fix the MAF
 

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Discussion Starter #7
once i fix these problems will the CEL go away or will i have to have it cleared? and can anyone help me with the thermostat issue?
 

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Can't find it but there's a service bulletin for this, there's rust forming on the connections of the radiator's bottom temp sensor (ECT).

My CEL's been on for 6 months now, can't find the courage to empty the radiator and change the sensor + wiring.

Oh and it comes off once in a while so if you repair your sensor, after a couple of heat cycles it'll turn off too.
 

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Go back to the same autozone you went to, after he hooks up the machine tell him you would like him to tell you how to use the machine to clear a code that you've fixed some stuff. Some will clear it for you (they're not supposed to though!) and some will hand you the machine.

If it's an orange scan tool (Actron) hook it up to the OBD2 port, turn your ignition to on, but don't start it. When the menu screen comes up scroll down to "erase" and it'll ask you if you want to clear the codes. hit the up-triangle button and it'll clear them.
 

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IAT sensors aren't hard to change, IIRC. What's your temperature gauge say, and is it running hot (not by the gauge..are was your coolant boiling over?)

Gimme some details (year/make/model/engine/exact troublecodes) and i'll pick around and see what I can find out. I would *not* take it to the shop. Sensors like that are typically* easy


*of course it might be in a stupid location like the crank sensor on a Maxima
They aren't hard to change, except the fact that it's not cheap because it's a MAF and not an IAT.
 

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Go back to the same autozone you went to, after he hooks up the machine tell him you would like him to tell you how to use the machine to clear a code that you've fixed some stuff. Some will clear it for you (they're not supposed to though!) and some will hand you the machine.

If it's an orange scan tool (Actron) hook it up to the OBD2 port, turn your ignition to on, but don't start it. When the menu screen comes up scroll down to "erase" and it'll ask you if you want to clear the codes. hit the up-triangle button and it'll clear them.
you have to go through all that? I had a CEL for a faulty MAF sensor awhile back and once i replaced it i just disconnected the battery for 5 minutes to clear it
 

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Discussion Starter #13
ok so i got some CRC brand MAF sensor cleaner to clean the MAF sensor and hopefully solve that problem...that will be ok right?

and with the coolant malfunction...so this is a normal sort of thing that i shouldnt worry about? i have a friend that said he will bring his CEL scanner and clear it for me so i dont have to worry about autozone doing it

so once i clean the MAF and clear the codes i should be fine right?
 

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you have to go through all that? I had a CEL for a faulty MAF sensor awhile back and once i replaced it i just disconnected the battery for 5 minutes to clear it
Yeah but you don't have to reprogram your radio with the Actron way. ;)

ETA if the MAF can be salvaged by a cleaning, yeah, it'll be OK. That's the spray I was talking about. I couldn't remember what brand it was.
 

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The ECT is at the bottom of the rad. Pretty easy to do. I believe it is under $50 from Honda. For you yanks it is probably even cheaper

I have had a few techs come to me to get the part(i am in parts)
 

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this thread is 1 of the most helpful ones ive read on 8th
 

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Discussion Starter #18
The ECT is at the bottom of the rad. Pretty easy to do. I believe it is under $50 from Honda. For you yanks it is probably even cheaper

I have had a few techs come to me to get the part(i am in parts)
ok so i get this rusted sensor out and replace it with a new one from honda...do you need to remove the bumper to get to it? do i need any special tools?

is there any way you could post a picture of the ECT sensor?
 

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Discussion Starter #19
this thread is 1 of the most helpful ones ive read on 8th
this is probably the most help i have ever needed with my car and i truly do not want to have my car serviced by the dealer or some place that will scam me like most repair places by treating me like i know nothing about cars and they can get away with charging me a ridiculous amount for changing something like a sensor or cleaning the MAF

ya thanks for everyone that is helping me
 

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you need to start by looking at the electrical diagram and find out what those two things have in common.. without that you're just playing a guessing game
 
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