How do I reset the readiness codes for the on board diagnostics.

I need some help real bad. My check engine light came on one day after my car started to run badly out of the clear blue. In a panic I took my car to an R&S Strauss shop that is right down the street from my job. When I got my car back from them the check engine light was out and the car ran and still runs great. The strange thing about all of this is they said they couldn't find anything wrong with my car. This happend in April and last week when I took my car in to be inspected at the service station for the emmisions test they said they can't get a code reading from the on-board diagnostics for the emmisions system. They asked me did I recently disconnect the battery and I told them no. I have a 2004 honda accord sedan lx with a 4cly. and the owners manual say that in order to see if the readiness codes are set, you have to turn the ignition to the on position without starting the engine. If the check engine light comes on for 20seconds and goes off the readiness codes are set. If the check engine light blinks 5 times then this means the codes are not set. I was told to drive the car on the highway and after a few days of normal driving the codes would be reset. I've done this and I still get the check engine light blinking 5 times when I go to see if the readiness codes have been set. Can anyone let me know if this would be an expensive problem to fix if I took my car to the dealer to have the codes reset in my car? Is this something I can do myself? Can someone out there help me,because with the way the economy is I really can't afford to take my car to the dealer right now. What do I do about this. Please someone respond quickly. Thank You, Kenya99  

I have a similar issue with a 2004 Honda Odyssey.

I was asked the same question "did I disconnect the battery".  I was told to go through a drive cycle of highway and local driving and to go back.  We have been back twice with the same, no codes.

did you get it resolved?  

Have you guys tried to actually disconnect the battery first, then drive it around? Doing so will rest the Ecu and all your codes may come back.  

Oh and be sure to have your radio codes handy  

I have similar problem ,  o2 sensor had gone for my car , mechanic replaced it and he deleted all codes ,
i was trying for past 3 days but readyness codes are not yet set , could you please let me know how did u get your codes back .  

My 2003 Acura MDX readiness codes do not reset has similar problem. I drove more than 1000 miles for 2 weeks, but the readiness codes are NOT READY.
Can anyone help me how to get the codes set to READY  

Readiness codes are set when you complete certain drive cycles (20 min @50+ MPH or 5 min below 30mph for example) and certain systems complete their self check.    A dealer should be able to tell you the conditions which you should drive to complete these tests.  
Coil-o's and Kswap coming soon

When you clear codes from your computer it sets a P1000 code.  This code tells a tech that someone has recently cleared codes from this car or the battery was disconnected or died.  This is why they keep asking you that  
Coil-o's and Kswap coming soon

A p1000 means all of the self check monitors are not complete  
Coil-o's and Kswap coming soon

Thank you for your reply. Once the readiness codes are set to READY, I'll let you know how long and how many miles I drove, I hope the OBD monitor is not malfunction.
I have asked the Acura dealer about the Drive Cycle, they said they don't know, now I don't trust Acura services anymore.  

I have been going crazy with the same problem. The mechanic is telling me to drive more but has no idea what the computer sensors actually require to become ready.  He initially told me that the computer needed to be reset and since then I drove 350mi.  Then he reset it again and I drove another 400mi.  Still not ready and I cannot do the emissions inspection, and I am going nuts over this issue.  I asked him if he could pretend that this is an old car and do the emissions testing without the computer but he cannot. If anyone has figured this out, please post.  

Here at the dealership, sometimes, I have to drive the cars home myself. 60 mile roundtrip. I keep the diagnostic tablet hooked up and I can see the ECU executing the tests. It does the cat moniter, evap, and EGR (which are the problem ones) at around 65 mph, steady throttle, for at least 1/2 mile. But the car must be started cold them warmed up before you get on the interstate. Honda calls it a drive cycle. Once the car warms up and does not complete the test, It has to be started cold all over again to start another drive cycle. Good luck!
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