Question about 1999 Dodge Intrepid

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Monitors not ready: Catalyst,Evap System, Oxygen Sensor, Egr Syst

These monitors were not ready, and caused me to fail inspection. What should I do?

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Drive it some more. Has the battery been disconnected/replaced recently? The Inspection station should be able to print you out a drive cycle to get the monitors ready also.

Posted on Mar 10, 2009


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2002 Hyundai Elantra that says my on board computer is not ready to be tested. Emission results are: readiness- fail, monitor comprehensive- not ready, monitor EVAP not ready,monitor O2 not ready.

Did you recently clear the trouble codes or disconnect the battery? Once all codes are cleared, the computer will not display systems 'ready' until they go through an evaluation cycle. Some of the systems require a certain number of drive cycles before they will display 'ready'. A drive cycle is usually starting the engine from a cold start (based on coolant temperature) and driving until certain conditions are met. I don't know what the requirements are for your car, but my 2003 pickup truck requires more than 10 drive cycles before it will make the O2 sensors and evaporative emissions 'ready'. Most states only require that a certain number of systems are showing 'ready' to pass emissions certification.

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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.
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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.
press helpful button

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Why can they fail my inspection for obd with no check engine light on?

there are many systems that need to be ready for the obd testing. for example the catalyst has to be ready and the evap. system needs to be ready if more than one of these systems are not ready the machine will fail you at this time. then they will tell you to usually come back in a week or so after the vehicle has been driven and they will test the vehicle again for FREE of charge. also if you just recently had any work done and they cleared the codes from your vehicle this will delete your obd system ready lights, which will cause the same outcome.

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1 Answer

Failed inspection because monitor evap not ready and monitor secondary air not ready. do i have to drive a certain way in or to reset

You DO NOT go to inspection without either
working on all vehicles or at least use a professional
scanner to see if all 8 monitors have run

If they haven't run or you have a fault code after they run,
you fail inspection

So you get the Evap Codes,diagnose that system & it's components, until you find where a vacuum leak is or what
solenoid failed.

That is best done at a shop with a smoke machine & knowledge

Emission Monitors run on their own every few days

What your referring to is Drive Cycles after certain repairs
have been made

You don't do them either,a shop does before you get the car
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for you to do & the info has to be looked up

You need a clear piece of roadway with no traffic to to Drive

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1999 elantra catalyst monitor, evaporative system monitor and 02 sensor monitor not ready fail inspection

Get the codes,diagnose using the codes

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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.

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Obd not ready won't pass inspection

It usually takes more than one drive cycle to clear all monitors to "ready".The vehicle may take multiple "from cold" drive cycles and hundreds of miles to clear all.Drive normally with varied driving and include long coasting down stops.Buy a cheap scan tool ($35) and check monitors as you drive.
DO NOT CLEAR CODES or run the battery dead or you will have to start over!

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