Difficulty resetting OBDII readiness monitor

[MichiganAve]

More than 2 months ago I got a P0440 error code. My wife had just driven the car and filled up the gas tank the day before, and the gas cap wasn't on very tight. So I simply reset the code with my scangauge. The error code has not returned. The problem is my scangauge still reads "not ready" after two months of driving including following a generic drive cycle multiple times (as closely as possible on public roads). And I'm due for smog/registration ASAP. Any ideas? The cycle I followed is below. I remember a few years ago it took a long time before the readiness monitor was reset after fixing an O2 sensor, but this is just ridiculous.

 

 

 

The OBDII drive cycle begins with a cold start (coolant temperature below 122 degrees F and the coolant and air temperature sensors within 11 degrees of one another).

 

NOTE: The ignition key must not be on prior to the cold start otherwise the heated oxygen sensor diagnostic may not run.

 

1. As soon as the engine starts, idle the engine in drive for two and a half minutes with the A/C and rear defrost on. OBDII checks oxygen sensor heater circuits, air pump and EVAP purge.

 

2. Turn the A/C and rear defrost off, and accelerate to 55 mph at half throttle. OBDII checks for ignition misfire, fuel trim and canister purge.

 

3. Hold at a steady state speed of 55 mph for three minutes.

 

OBDII monitors EGR, air pump, O2 sensors and canister purge.

 

4. Decelerate (coast down) to 20 mph without braking or depressing the clutch. OBDII checks EGR and purge functions.

 

5. Accelerate back to 55 to 60 mph at half throttle. OBDII checks misfire, fuel trim and purge again.

 

6. Hold at a steady speed of 55 to 60 mph for five minutes.

 

OBDII monitors catalytic converter efficiency, misfire, EGR, fuel trim, oxygen sensors and purge functions.

 

7. Decelerate (coast down) to a stop without braking. OBDII makes a final check of EGR and canister purge.

[nunya]

My usual "reset ride" ususally consists of a 10-15 minute highway ride set at about 55mph (which will get you ran over by the white haired old lady in the Buick with the big sunglasses overtop of her regular bifocals) followed by a 2 mile stretch of forced stop and go driving (the exit I get off at si an industrial park with a long strait, easy visibilty, 2 lanes both ways and, verry minimal traffic) fo hard acceleration up to 35-45mph to a quickish stop, repeating the lenght of the road and turnign around and doeing it again to go back, stop and go-ing the whole way back to the highway where the cruise is set at 55ish again for the ride home to see how many times I cna be waved at minus a fiew fingers. Fortunatly in PA we don't require all the moniters to be ready to pass, 1996-2000 are allowed to have 2 incomplete test while 2001-presenty are allowed 1 (now thats incomplete, not failed)

[MichiganAve]

I found a pamphlet that says the rule for Missouri is "For 1996-2000 vehicles, three or more unset monitors will result in a test failure. For 2001 and newer vehicles, two or more unset monitors will result in a test failure."

 

When the scangauge says "not ready" that doesn't tell me how many monitors are unset right? IE I might only have one missing and therefore could get it smogged now?

[nunya]

I don't know what scantool yur using or what options it has, I use a snap-on modis at work so I can get a little in depth