can someone tell me ALL the possible reasons why the chk eng light can come on? is it only related to the 02 sensors? i think i heard that somewhere...
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CEL can be more than O2 sensors. Take it to autozone or another place that will read codes for free. You can also jump a connector under the glove box to read the blinks of the light. You might want to do a search on here for CEL and how to read them, I'm not sure about your year of car if it is all the same.

 

Seriously,look in the DIY section: https://www.hondaaccordforum.com/HON...m_15108/tm.htm

Here's a list of ALL the codes for your car: http://www.troublecodes.net/honda/hondaobd2.shtml

I see 124 codes listed there. No one is going to take the time to list all those out.
FYI: From what I see, there are only 16 of 124 codes that are caused by an o2 sensor. Whoever gave you that info is dead wrong.

 

Not only that, but each of those 124 codes simply narrows it down to a system, not necessarily a single definite problem. So there's hundreds & hundreds of actual REASONS for it to go off.

 

code P0740, AT concerns. my trans slips and slides ALL over th place, hence all my other trans posts. Time for a new AT. (sighs)

 

The transmission code of death.....

 

really? what exactly does that code mean, chio?
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bump. what does that code signify?
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Start saving for a replacement tranny. I'm no expert on auto trannys, so hopefull someone else can chime in.

 

It points to the converter lockup circuit in the transmission. There's a screen in there that gets clogged up from all the worn out clutch packs causing low fluid pressure. A rebuild is the only way to repair it.