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Obd not ready failed inspection - 2004 GMC Sierra

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  • honeymokey
    honeymokey Apr 09, 2011

    It has a code set in it. What is truck doing? Idling different? Taking a long time to start after it warms up?

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2 Answers

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

Engine light has come on. problem was starter motor which was repaired & flee through wof. but light is still on, it is a nissan primera station wagon import from japan. does anyone know how to change the...


Your vehicle is equipped with an OBD II computer AND a link to connect OBD II computer to a Smog Check Analyzer or Data Scan Tool (available
at most auto part stores).There are two types of codes, bad codes and good codes. The good codes are the "Readiness Flags". These Readiness Flags
indicate that certain emissions systems which the OBD II computer has been monitoring have PASSED the test, indicating that those systems are
working properly. Then there are the bad codes. The bad codes are actual "Trouble Code". These codes indicate that the OBD II computer
has detected a problem with in the emissions system. The Trouble Code will specifically indicate the component and problem which was found.
Newer vehicle's have very complex codes in the thousands.
"Readiness Flags" do not cause the "Check Engine" light to illuminate, but may cause a vehicle to fail the smog test.
In order to set all the proper "Readiness Flags" the OBDII system must complete at least one drive cycle (in some cases
two or three). A drive cycle is a sequence of internal tests which the OBDII computer runs while your vehicle is being driven. This insures
all emissions systems are functioning properly. Only then will your vehicle pass the smog inspection. A drive cycle usually requires one
week of driving.

Jun 10, 2014 | Cars & Trucks

1 Answer

Saturn codesP0000


Your vehicle is equipped with an OBD II computer AND a link to connect OBD II computer to a Smog Check Analyzer or Data Scan Tool (available
at most auto part stores).There are two types of codes, bad codes and good codes. The good codes are the "Readiness Flags". These Readiness Flags
indicate that certain emissions systems which the OBD II computer has been monitoring have PASSED the test, indicating that those systems are
working properly. Then there are the bad codes. The bad codes are actual "Trouble Code". These codes indicate that the OBD II computer
has detected a problem with in the emissions system. The Trouble Code will specifically indicate the component and problem which was found.
Newer vehicle's have very complex codes in the thousands.
"Readiness Flags" do not cause the "Check Engine" light to illuminate, but may cause a vehicle to fail the smog test.
In order to set all the proper "Readiness Flags" the OBDII system must complete at least one drive cycle (in some cases
two or three). A drive cycle is a sequence of internal tests which the OBDII computer runs while your vehicle is being driven. This insures
all emissions systems are functioning properly. Only then will your vehicle pass the smog inspection. A drive cycle usually requires one
week of driving.

Jun 10, 2014 | 2006 Saturn Vue

3 Answers

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.

May 05, 2014 | Cars & Trucks

1 Answer

Repalce egr and engine light still on


OBD II needed to reset and erase the codes. they will go out after a large number of uses. but for about $50 you can buy an OBD 2 for you car and plug it in under your dash usually and reads the code and tells you whats wrong and what sensors are showing up. also can erase the codes and turns out the engine light . PS if your going to inspect your car. Once you erase the codes you`ll need to drive your car for 80 to100 miles for the computer to reconfigure itselt for the engine performance. otherwise the inspection will read computer not ready na dyou`ll fail inspection.

Apr 04, 2014 | 2006 Buick Rendezvous

1 Answer

Toyota t100 obd not ready


The problem is not the parts but the communication between the parts and the computer. I would have the computer reflash and then drive the vehicle for a extended amount of time. This should fix the problem.

May 23, 2017 | 1997 Toyota T100

1 Answer

What does obd readiness driving procedure mean


it means an unit either the ecu or gearbox module was not complete and will need retesting, this can be because of an repair or damage when repairing. so the unit/s needs testing.

Jul 24, 2017 | Cars & Trucks

1 Answer

Emmision test failed?


maybe i can help, the car has to be in a obd rhope this helpseadiness mode,thecar is probably not in this mode because it has not been driven enough or the(right way). you have do do a drive cycle to get the computer to go into obd readiness mode. also check pin #16 on obd connector tomake sure it has power. go to obd website for complete instructions on the DRIVE CYCLE it is rather long,

Apr 08, 2009 | 2000 Hyundai Elantra

1 Answer

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!

May 29, 2017 | 2001 Pontiac Grand Am SE

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