Check Engine Light

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Check Engine Light

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Mitsubishi Forums >> Tech Help and Information >> PCM & Fuel Systems >> Check Engine Light

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Check Engine Light - 1/17/2008 7:53:37 PM

Scubba.steve

Posts: 202
Joined: 1/14/2008
Status: offline

Hey im having problems with my IAT sensor
P0112 Intake Air Temperature Circuit Low Input
Pops up whenever its put on the machine, which throws my check engine light on..
Well the sensor was just replaced. Im not understanding how or why its throwing low input code up..
Any thoughts guys?
thanks

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140 HP @ 6000 Rpm 133 (lb-ft) Torque @ 4800 Rpm

Post #: 1

RE: Check Engine Light - 1/18/2008 5:03:00 AM

TheEngineer

Posts: 10261
Joined: 1/25/2006
Status: offline

does it come right back on after you reset the ecu (disconnect the battery). Or does it take a little. Im just wondering if this is an intermittant problem or something thats constant. Are there any performance issues?

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quote:

ORIGINAL: pilsenblue
Even tho My car looks great It will never be fast. Kinda like a hot girl that dosent give it up

(in reply to Scubba.steve)

Post #: 2

RE: Check Engine Light - 1/18/2008 8:53:47 AM

Scubba.steve

Posts: 202
Joined: 1/14/2008
Status: offline

Comes back on within 5 minutes of clearing the code.
Everynow and then it takes it a minute to start up.
But when i unplug some sensor right beside,(Right where my ait intake goes in) It starts right up
Havent tried clearing the code then disconecting the battery though.
No performance issues, the car screams threw knoxville.

_____________________________

140 HP @ 6000 Rpm 133 (lb-ft) Torque @ 4800 Rpm

(in reply to TheEngineer)

Post #: 3

RE: Check Engine Light - 1/18/2008 11:09:26 AM

dsm1990gsx

Posts: 1876
Joined: 10/22/2007
Status: online

Check the wiring for the sensor. You might have a broken wire to the pcm.

(in reply to Scubba.steve)

Post #: 4

RE: Check Engine Light - 1/20/2008 3:03:28 PM

Scubba.steve

Posts: 202
Joined: 1/14/2008
Status: offline

All wiring looks fine, unless 1 is broken off inside

< Message edited by Scubba.steve -- 1/20/2008 3:07:03 PM >

_____________________________

140 HP @ 6000 Rpm 133 (lb-ft) Torque @ 4800 Rpm

(in reply to dsm1990gsx)

Post #: 5

RE: Check Engine Light - 1/20/2008 3:33:04 PM

dsm1990gsx

Posts: 1876
Joined: 10/22/2007
Status: online

Lol you cant tell a wire is good by looking at it, try ohming the wiring from the sensor to the ecu.

(in reply to Scubba.steve)

Post #: 6

RE: Check Engine Light - 1/20/2008 4:19:34 PM

lhausi2

Posts: 687
Joined: 11/5/2007
Status: offline

if you get a haynes manual it'll tell you how to test the sensors if you dunno how which it sounds like

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Post #: 7

RE: Check Engine Light - 1/20/2008 6:57:02 PM

Scubba.steve

Posts: 202
Joined: 1/14/2008
Status: offline

Thank you, i have the haynes manual, took less than 5minutes schimming through it and found what i needed.
Now just need a meter

_____________________________

140 HP @ 6000 Rpm 133 (lb-ft) Torque @ 4800 Rpm

(in reply to lhausi2)

Post #: 8

RE: Check Engine Light - 1/23/2008 6:23:56 PM

lhausi2

Posts: 687
Joined: 11/5/2007
Status: offline

you can buy a half way decent one at napa or autozone , for like 40 bucks, and you can use it for a whole lot more than just resistance

(in reply to Scubba.steve)

Post #: 9

RE: Check Engine Light - 1/23/2008 8:15:35 PM

Scubba.steve

Posts: 202
Joined: 1/14/2008
Status: offline

well i took the car to midas, they told me that it was a sensor that was supposed to be on my cold air intake,yet they couldnt find the wire and said someone had ripped it out. I think they are full of $hit. Im just going to replace the one i have.

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140 HP @ 6000 Rpm 133 (lb-ft) Torque @ 4800 Rpm

(in reply to lhausi2)

Post #: 10