I just bought an '00 with 162k miles on it. The CEL & EngMain lights have been on from the beginning. I was told when purchased about this and the sensor from the dealer codes read Catlytic Converter under threshold and the O2 sensor bad. I can purchase software for $122 to plug into my laptop. Will that tell me more? Is it worth it or just go to Advance or Penske Honda? From reading the posts it looks like I need to replace both sensors which I think are #208726 & 7. Is that correct? I have the manuals on order. Today while driving the IMA light came on. The bars were low which meant I was charging. After a bit of driving, the IMA showed a full large and at that point the light came on. I have not thoroughly checked the vehicle since I am just driving it. I am hoping to get the service records from where it was serviced. What do you people recommend. Got 62+mpg on the test drive trip from Tulsa to Indy. My other transportation are my '85 Civics which I rebuilt so I am not afraid of getting my paws dirty.