pbadger

I am having the code P0113 come up and I was wondering if someone could tell me some possible problems that could cause this code. I have already checked the sensor and it is fine.

EE_Chris

What is the IAT sensor resistance after the car has cooled down for awhile?

pbadger

When the car is cool, outside temp. 65-70 the resistance was 2k ohms and when I ran it for a while to normal operating temperature the resistance was .8k ohms.

monicle

make sure you used the right harness connection to the IAT if you recently unhooked the harness.

EE_Chris

Since you have a scantool:

Turn ignition 'on' and check IAT with scantool.

Is -4*F or 5v indicated?

If NO, intermittent problem.

If YES, then disconnect the IAT sensor 2p connector and short this connector with a piece of wire.

Does the scantool indicate -4*F or 5V?

If NO, replace the sensor.

If YES, turn the ignition off and connect a jumper wire to *96-98 uses D8 and D11, 99-00 uses C18 and C25*, turn the ignition back on and check IAT.

Is -4*F or 5v indicated?

If NO, repair the open in the preceeding two wires.

If YES, substitute a known good ECU. If IAT checks out normal, replace the original ECU.

zumnwrx

hey EE_Chris

you posted some good info and im currently having this code pop up also on my civic ive replaced the upper header 02 sensor 2 times now and its a bone stock civic lx 98

can you please elaberate a bit as far as what ATI p2 and all those other terms mean

thanks in advance
edgar, <- must pass smoge :D