Q&A

 Journeyman

There are three O2 sensors on your Civic. It's highly unlikely that all three have gone bad. There is a code for catalyst deterioration and different codes for O2 issues (depending upon what the O2 is doing). Honda does have a bulletin that applies to some 2005 Civic Hybrids that addresses the catalyst deterioration issue. There is an problem with the software in the PCM that can cause the MIL to illuminate and store the catalyst deterioration code. If your Civic is one that falls within the bulletins parameters a software update is needed to repair the issue and in some cases replacement of the catalyst will be needed. To my knowledge the only place to get the update is at a Honda dealer.

The second issue is the stuttering. You didn't mention if the car has and automatic or standard transmission. If it has an automatic then there might be an issue with the start clutch. Honda has a bulletin on this issue also. Other issues besides the automatic transmission could possibly be broken motor mounts or a faulty EGR valve. It also could be a combination of all three.

In both cases it's in your best interest to have it looked at by a Honda technician. They have the experience with the Hybrids and should be able to diagnose the problems correctly and repair the vehicle. You might want to check with the dealer to see if your vehicle is eligible for some type of good will repair from Honda. Depending upon the type of vehicle your Hybrid is the warranty could be as high as 10 years 110,000 miles on certain components if they need replacing. Your Honda dealer will have all that information.

 Rookie

No I took mine to Honda dealership and it cost me a little more than $700.00 and that was all three. Mine is a Hybird and has CAL. emissions so it takes 3 sensors. Just wait for the Converters. Their is a replacement for the back converter, however the front will have to come from Honda. I am trying to find one other than Honda but haven't found one yet. I am looking for on for Cal. emissions. My sensors went out at 114000 miles. You can look up the codes on line. Good luck.

 Rookie

When you say "stuttering" does it sound like those little bumps in the road that are meant to keep you awake or get your attention on the highway? If so, good news! We recently had this problem and were out of warranty. We took it to a very good mechanic at Pep Boys, who did research for us and found out it's a known problem with HCH, and that it would be covered through Honda. We called Honda Service, who told us that it wasn't, but we fought it & they took care of the problem in a few days. It drives good again. If it's not that, I'm sorry I can't help you!