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Failed Emmisions. Readiness Monitors not ready

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Why do i get OBD/READINESS, Not ready?


Alan, I f you have had battery disconnected or had some one erase codes recently, the computer has to go through what is known as a drive cycle to complete all monitors cycling, some vehicles complete cycle in 10 miles, where as some could take 100 miles or more.
My Toyota EVAP readiness state will not cycle in cold weather and takes thousands of miles before it gets to readiness state.
I think some shops can force systems to run if they have a good scan tool.

Mar 06, 2016 | Cars & Trucks

1 Answer

My 2001 dodge intrepid failed emissions says due o excessive of readiness monitors 'Not Ready'


you must not clear codes or unhook battery after doing what they call a drive cycle which resets monitors to a ready state. http://www.lhforums.net/forums/showthread.php?2755-OBD-II-and-your-Next-State-Inspection
press helpful button

Dec 18, 2015 | 2001 Dodge Intrepid

1 Answer

I HAVE FAILED EMMISIONS PASSED ALL BUT READINESS RESULTS. CODE 99999..OBD


Read the article in the link below and it will explain how the readiness monitor tests work.

http://ricksfreeautorepairadvice.com/readiness-monitors-and-drive-cycles/

Mar 09, 2015 | 2000 GMC Jimmy

2 Answers

Why won't my car pass emissions test even if the check engine light isn't on??


the computer meters fuel based on a signal from the coolant temperature sensor. The check engine light sometimes does not come on when the sensor fails.If the sensor is causing your problem you will have a strong odor of gasoline when the car starts,It will be slow to start the first time, turn it off and it will start right up. lol

Sep 12, 2014 | Pontiac Grand Prix Cars & Trucks

1 Answer

2002 Pontiac Grand Am GT - Failed Emissions Due to excessive number of readiness monitors 'Not Ready'


I would start with a good tune up ,spark plug , fuel filter , air filter
and depend of mileage o2 sensor change (over 100,000 km)
and retest for emissions
hope it helps

Oct 09, 2013 | Pontiac Grand Am Cars & Trucks

1 Answer

My 2003 ford f-250 failed inspection because the readiness monitors are set to not ready.what does it take to change them to ready?


alot of driving. you need to drive the vehicle until all the computers turn to the ready state. if there is a problem the check engine light will come on and the monitors will not be set.

Aug 03, 2009 | 2003 Ford F250 Super Duty Crew Cab

2 Answers

Failed emmisions test..


I am in Virginia but I believe you vehicle is showing a monitors not ready for Catalyst & Evap. If that is correct you need to basically drive the car a few days. The computer will remonitor itself and should be fine following that. Most drive cycles require highway driving & city driving. Make sure you turn on a/c as well. Its not how many miles you drive but what conditions you drive that sets you monitors. You could locate the drive cycle and attempt to replicate it but its usually very difficult drive exactly as the cycle asks. Good luck.

Mar 18, 2009 | 2003 Mercedes-Benz CLK-Class

1 Answer

Monitor Reset


The following conditions must occur to complete a Trip and test all OBD II monitors and components including the Catalyst Efficiency Monitor:
-- The misfire, comprehensive component, and adaptive fuel monitors are checked continuously from engine warm-up and can complete any time.
-- The exhaust gas recirculation (EGR) monitor test requires a series of idles and accelerations.
-- The heated oxygen sensor (HO2S) monitor requires a steady speed drive for approximately 1 minute at 30 to 40 mph.
-- The catalyst efficiency monitor requires a steady speed drive for 1 minute and 20 seconds beyond the HO2S monitor test at 40 to 65 mph.
If you cut engine off before test are completed then you must wait for a 6 hour cool down before monitors will run again.

Feb 06, 2009 | 1996 Nissan Quest

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