Hey fellas, daughter's car, 2000 civic dx, is acting up. It's been giving different sensor codes despite me replacing the sensor. Now the latest issue is when putting the car in drive, the D starts flashing on the dash and the car will rev high but barely move. Well I pulled the negative battery cable to erase the codes then it drives fine again for a day or 2 then it'll start acting up again.

I'm thinking it could be a computer issue. My question is if I go pick up a used one from the junkyard, is it just plug and play or do I have to get it flashed?
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If the D starts flashing it's a transmission issue.

Diagnose the code first before wasting money on swapping ecus.

 

I have, I had this same issue about 4 months ago with the flashing D. I cleared the code and it ran fine since. Now it's doing it again, but when I clear the code it's fine. That's why I don't believe it's an actual transmission issue. The computer throws random codes every now and again and when I clear it, the same code usually doesn't come back, but a different one will

 

Have you tried fixing the code rather than kicking the can down the road?

 

You can remove and open up the PCM and check if there are any blown/leaking capacitors or burnt resistors. Many times these can be replaced .

If the PCM has damage and you can't repair it, you can get a compatible PCM from a junkyard, etc. to replace without any reprogramming. There is no Immobilizer System in these like later models.

 

Thank you very much for answering my question. Greatly appreciated

 

92-93 accords have similar issue that is pretty common and its resistors in the ECU, you can take the cover off and see if anything is burnt, cracked, or leaking

If you get one from the junk yard, if you get the same ecu you should be able to swap it in you will need one from 99 or 00, to use with out a conversion harness, I believe the plugs are different from obd2a to obd2b, I am not 100% as I am an obd1 guy

96-98 obd2a

99-00 obd2b