How do I reset a check engine light after I had chnged air filter and forgot to reconnect air sensor cable?

I heard you can disconnect the battery for a while and this might work but I don't think it erase the code. It's also not good as your enginer has some memory that is good to keep. The best thing is to connect an auto scan tool to erase the codes. Autozone and Advance will do it for free or you can buy your own tool for 60 to 90 dollars.

you can remove the ECM fuse for a few minutes and put it back in,or you can unhook the NEG side of the battery also for a few min and reconnect,eather should cut off the light,it clears the codes from computer,wont hurt a thing.

Battery cable disconnect worked just fine. Thanks "papa!"

you welcome,if you have any more questions,just ask.

hi, I have a ford expedition 2012 xlt , before two days ago I added to the fuel tanks an octane enhancer, but after while the check engine goes on, I disconnected the NEG cable of battery, the check engine goes off, but yesterday goes on again suddenly, I did the same thing and go off again , what I should do the be sure it will not appear again? thanks Ranj

ranj1983 it reappears until the issue is fixed - every 30 miles it cuts on again

My check engine won't go off. What could be the problem

Oh yeah , Before one month my Expedition 2012 check engine start again, and i take my ca to the ford dealer and they inform me that it come from Oxygen sensor , so they replace it but after 2 days start a gain the dealer says it is from Injectors and we have to replace it as well so we did that as well, and now start again , i wanna know what should i do and almost i spent more than 850$ on it and still start on, what can i do to make it off. many thanks

Same thing happened to me... Engin light came on and prob showed cylinder 8 too many misfires... Changed egnition coil. Twice and the 3rd time I got that code spark plugs showed up... That's prob what it was the second time too. I knew my vehicle was too new for foolishness already. 2013 w: 88G miles I'm grateful that's all it was though. Now I need this light off.

How do you reset the service engine soon light is it the same as the check engine light or different

tried the battery disconnect, but did not resolve the warning light.

Service light is usually a light saying you should change the oil as a reminder. If you have a tripometer reset button just push that and hold it down then turn on ignition switch. Do not start just turn on ignition to light up the dash. Continue to hold the tripometer button down until service light goes off. Done.

95 Ford Explorer and the engine check light won't come on when you turn the ignition how do I find out the problem

Ah no advance won't clear codes 10 k fine if they do is what they said today I spent 2500 in emission related parts and other parts in the last three months an they can't clear a code for me to find out what else I may need or they sold me the wrong parts again but now I'm getting p0443 an 1750 o2 sensor codes out of range now instead of open circuits so I'm getting closer to getting that light out it's been on so long bulb actually burnt out

My engine just can on this morning now I cut off the switch and turn back my check engine flash 8 times so what the problem went my motor not running

My hill descent control fault light came on and my service advancetrac warning light came on after changing brakes