Siepel

Did you recently "RESET" your on-board vehicle computer "ECU" by disconnecting the battery or something like that?

In order to pass smog inspections, the MONITORING tests must have been completed.

COMpletion NOT READY?

Good luck (God knows you can use it)

bloodzombie

I'm not trying to be a jerk here, but you'd probably get more help if you took an extra few minutes to type out in real sentences exactly what the problem is.

I know they had a hard time finding the plug for my OBDII. If that's the problem, look at Doug's description, go find it and then go back and show it to them.

mxt_77

Is your car modified or stock? Have you replaced the battery or otherwise had any electrical issues? Is your backup fuse blown?

Sinji

I had the same problem at my local smog station. the problem you are having is the smog computer cant link to the factory computer from our car. the tech guy said that its not able to read anything from our computers. The funny thing was I had a scanner with me and it was reading the computer fine, so I went to another smog shop and theirs hooked up properly. Looking at the plugs that was used to plug into the OBD port, the original clip that was used by the first shop was on the long side and the pins didnt reach the port properly. the second smog shop that i went to had a shorter clip housing and the pins reached fine.

INTJ

She drives it and the rest of the gang are right. Next time you would be better off posting a tech question to a more technical forum.

They need to reimburse you, the tech either didn't use the right plug (yes happens all the time) or didn't push it in completely (stupid design), but either way they didn't follow the proper diagnostic path as required.

CKit

THIS IS FROM PERSONAL EXPERIENCE WITH ANOTHER VEHICLE:

If they hooked up the OBDII port and the machine says COM not ready, then like Siepel said, the computer's monitors aren't ready.

Usually when you reset the ECU (or recently had a battery changed / drained), you go through the reset protocol in your daily driving. However, due to city driving with stop-and-go traffic it IS possible to go months without getting the monitors online.

It drove me crazy with our old Maxima. I literally went to smog the darn thing a half-dozen times before looking the reset protocol online.

The Honda protocol is listed on page 261-262 of the AP1 manual:
1. Make sure the gas tank is nearly, but not completely full (3/4 tank).
2. Make sure the vehicle has been parked with the engine off for 8 hours or more.
3. Make sure the ambient temperature is between 20-95 deg F.
4. Without touching the accelerator pedal, start the engine and let it idle for 20 seconds.
5. Keep the vehicle on Neutral. Increase the engine speed to 2,000 rpm and hold it there until the temperature gauge rises to at least 1/4 of the scale (approx 3 minutes).
6. Select a nearby lightly traveled major highway where you can maintain a speed of 50-60mph for at least 20 minutes. Drive on the highway in 5th gear. Do not use the cruise control. When traffic allows, drive for 90 seconds without moving the accelerator pedal. (Vehicle speed may vary slightly; this is okay.) If you cannot do this for a continuous 90 seconds because of traffic conditions, drive for at least 30 seconds, then repeat it two more times (for a total of 90 seconds).
7. Then drive in city/suburban traffic for at least 10 minutes. When traffic conditions allow, let the vehicle coast for several seconds without using the accelerator pedal or the brake pedal.

And c'mon guys, I thought some of the responses in this thread were pretty rude (even for me ). When I went through this, I had no idea what was going on to even look or ask a cohesive question. Literally you'd get a piece of paper from a minimum wage Emissions tester that'd say "Com not ready" and when you'd ask them what happened they'd say "I don't know, go to your Dealer / Mechanic." In some states, they don't let you anywhere near your car when emissions testing so you wouldn't even know if the OBD scanner was hooked up properly.