I NEED SOME HELP FIGURING OUT WHAT THESE TROUBLE CODES MEAN, 24, 25, AND 31
1994 Toyota Pickup
November, 10, 2011 AT 9:59 PM
I did the trouble code with the check engine light and received codes 24, 25 and 31 and do not understand the meanings. Code 24 says "intake air temp signal fault. Code 25 says air/fuel ratio lean. And code 31 says Air flow meter circuit or vacuum sensor signal fault.I have checked all vacuum lines and all are good. I can't figure what I am to fix. My truck is at one point idle low and volts low, when the volts go up the idle goes up. Mpg's has dropped and it is all together running badly. The check engine was on once before with only code 25 showing, it did go off for about a month after changing the plugs. I had one bad burnt plug.
I have the codes. My question is, what do the codes mean?
#24-Intake air temperature sensor (tha) signal.
Does this mean a signal or sensor is out and needs replaced?
If so how do I find the sensor?
#25-Air/fuel ratio lean.
I can't find any info on this fix. What needs fixed?
#31-Manifold absolute pressure sensor signal
This was different then my info, but again, does this mean
a sensor is out? If so, how do I find it?