i have a 2001 Honda Prelude with 50K on the motor and this is the first time in about a year after i had the car my Check Engine Light came on? can anyone help me and tell me why it would come on?

 

We'll have you ever thought of a car running it's own diagnostics??? And taking it to someone to get the codes from your ecu, or doin it by yourself??

 

Dude you have something wrong with your car!! Don't panic Just take it to a autozone or advance auto to get it checked out!!! Tell them to run a scan on ur car.

 

but check this out ive had this car for about a year now and its never done this? why is it happening now? why would it be he ecu I've never messed with any plugs or fuses ever. the only maintenance i do is oil change

 

taking it for a diagnostics check is how you find out WHY. almost any auto parts store will do it for free and it takes about a minute.

 

don't panic. . . i could be something as simple as a loose or defective gas cap. take it to autozone, have someone pull the code and start from there. have them print out the diagnostic trouble code and get back on here and post the number. it should be something like example (p0300-random multiple cylinder missfire).

 

 

k i went to PEPBOYS and they told me that it was my air intake sensor.. but even they couldn't figure it out. they said it could be a relay of some sort, but after the diagnostic this is what they came up with

</U> RPM METER<U>

300RPM......*..................................... ...............................5000RPM


***P0113 IAT CKT High Input***

<U>VEHICLE STATUS</U>
Vehicle = OK
Number of DTC's = 1
MIL = ON

<U>NON CONTINIOUS MONITOR TEST </U>
Catalyst =Complete
Heated Catalyst =Not Supported
Evaporative system =Not Complete
Secondary Air System =Not Supported
A/C Sys Refrigerent =Not Supported
o2 Sensor=Complete = Complete
o2 sensor Heater =Complete
EGR System =Complete

<U>CONTINIOUS MONITOR TEST </U>
Misfire =Complete
Fuel System =Complete
Comprehensive Component= complete

++ I ALSO CHANGED MY STOCK INTAKE FILTER TODAY.

What can this be? please help me


Modified by kingh90 at 7:35 PM 9/13/2008


Modified by kingh90 at 7:39 PM 9/13/2008


Modified by kingh90 at 7:41 PM 9/13/2008

 

try to reset by unplugging the battery for 30s and run the car normally to see if it'll throw the same code

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by pesater &raquo;</TD></TR><TR><TD CLASS="quote">try to reset by unplugging the battery for 30s and run the car normally to see if it'll throw the same code</TD></TR></TABLE> THANKS MAN IT WORKED!!!!

 

thats just a bandaid.

replace the IAT sensor.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 98vtec &raquo;</TD></TR><TR><TD CLASS="quote">thats just a bandaid.

replace the IAT sensor.</TD></TR></TABLE> x2
all pulling the battery cable loose was reseting the computer. the iat is bad the cel will come back on. the only other reason it would throw that code is if the iat got unplugged somehow. btw it is on the driver side of the intake manifold.

 

yeah i know i took off the battery wire. then relised the iat was out so i plugged it back in., then put the batterywire back on. but the light came on again, so i unplugged it for a good 30 seconds and it worked.

 

the ecu isnt going to throw a check engine light just because it feels like it. It throws a code when there is a problem which needs to be inspected and fixed.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 98vtec &raquo;</TD></TR><TR><TD CLASS="quote">the ecu isnt going to throw a check engine light just because it feels like it. It throws a code when there is a problem which needs to be inspected and fixed.

</TD></TR></TABLE>


my iat sensor was out it probably poped oit while i went over a bumb. and i plugged it back in.

 

how did it "pop" out??? did it come unplugged?? the iat sensor is bolted into place.

 

the way i think of it, it was probably loose the person didnt click it in. im guessing