2007 Chevy Cobalt - did not pass emissions - got 'Unavailable: did not communicate' for the OBD Readiness Monitors status.

110

Asked by mtbmesa Mar 29, 2015 at 11:51 PM about the 2007 Chevrolet Cobalt LS Sedan FWD

Question type: Maintenance & Repair

2007 Chevy Cobalt - did not pass emissions - need gas cap (no prob getting that) but also got 'Unavailable: did not communicate' for the OBD Readiness Monitors status. All fuses in car under the fuse panel are good. Where should I look from here?

10 Answers

110

No. There has been no check engine light at all. I went to emissions and they say there is no power when they hook up their odbc plug. There is no power to the socket under the dash. The gas cap thing was just another part of the test they run and it failed their compression test I guess. But the odbc socket has no power to it they tell me so we don't even get beyond that with the test. So it is power to that socket I need to troubleshoot.

3 people found this helpful.
110

Yes it does. with the key on but the engine off It is yellow

1 people found this helpful.
110

This car belongs ultimately to my daughter who had a drug problem and is sober now, But when she had it she was a pig unfortunately. I pulled the plug out of the mount and it looks like perhaps a soft drink ofr something was spilled perhaps up on top of the dash board or somewhere up there and it went down and got everything all sticky. So the wires going into the back of the plug are completely sticky and gummed up. None look like they are backed out. I'm going to drench them in cleaner to get rid of the gunk. Thoughts on this new wrinkle? And again, all the fuses under the panel on the passenger side were good. Is there another place to look perhaps for a blown fuse or bad relay?

1 people found this helpful.
110

My daughter confirmed that soda pop has gone everywhere in that car up in the dash. Oreilly confirmed with their testing tool that there is no power to that plug. It kept asking them to connect the device while it was connected. What would be the next step?

2 people found this helpful.
110

I do have a multi-meter so I can test each wire but not quite sure how to do it or if there is a trick with the cobalt to test power to wires...or if it is pretty straight forward.

2 people found this helpful.
110

Thanks! Which is the ground on that plug? I'd like to also test continuity of each wire if possible.

110

Actually not quite. ugh. So this is not my main car. It hardly gets driven. So while ADEQ connected w/o issue, the reading was 'the computer is not ready or is reset'. So I need to drive it for the computer to reset and track data I guess. So question, how long do I need to drive it, how fast, what do I need to do of a special nature if anything? Floor it? Hit 80 and hold it for a certain amount of time? And how many miles do I need to go? Any suggestions would be great

1 people found this helpful.
110

I just reread this thread. I got it. A week minimum or just a certain amount of mileage, or a certain amount of time at the wheel? A week is a long time and the tags expired. Don't know if I can get away with several three day temp reg's. Any alternative to a full week would be great.

1 people found this helpful.
10

Good job on the thread very easy to understand straight to the point. I like it ! very cool you said something about that Guy's daughter staying clean and sober!!! that was really cool of you bro.

1 people found this helpful.

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