Question about 2000 GMC Jimmy

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

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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/

Posted on Mar 09, 2015

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I have a 03 f 150 4.6 2 wheel drive I lost overdrive and reverse at same time no warning and have a code p1000 how do I fix


Code P1000 is nothing , just the codes were cleared or battery was disconnected ,that's all that means . Does the O/D light flash ?
P1000 - OBD (On Board Diagnostic) System Readiness Test Not Complete The OBD monitors are performed during the OBD Drive Cycle. The P1000 will be stored in continuous memory if any of the OBD monitors do not complete their full diagnostic check.
  • Vehicle is new from the factory
  • Battery or PCM had recently been disconnected
  • An OBD monitor failure had occurred before completion of an OBD drive cycle
  • PCM DTCs have recently been cleared with a scan tool
  • PTO circuit is shorted to VPWR or B+ or PTO is on during testing
The Ford P1000, inspection/maintenance (I/M) readiness function is part of the PCM strategy. A battery disconnection or clearing codes using a scan tool results in the various I/M readiness bits being set to a "not-ready" condition. As each non-continuous OBD monitor completes a full diagnostic check, the I/M readiness bit associated with that monitor is set to a "ready" condition. This may take 1 or 2 drive cycles based on whether malfunctions are detected or not. The readiness bits for comprehensive component monitoring, misfire and fuel system monitoring are considered complete once all the non-continuous monitors have been evaluated. Because the EVAP system monitor requires certain ambient conditions to run, special logic can "bypass" the monitor for purpose of clearing the EVAP system I/M readiness bit due to continued presence of these extreme conditions.
Note: The P1000 does not need to be cleared from the PCM except to pass an I/M test.

Sep 24, 2018 | Ford F-150 Cars & Trucks

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

Car has failed mot on high co2 emmisions


Have you had the ECM checked?

The ECM controls your fuel to air mixture as well as monitoring the CO2 levels.

Also, have you checked the oxygen sensor, when there's too much oxygen intake,,, the ECM increases fuel to compensate for the excess air, and thus results in more CO2.

Another check would be to find the diagnostic port, (usually under the dashboard), and, to either hire, or borrow an OBD diagnostic tool and see if there is an error code displayed, beginning with 'P', the code will show you what component is likely to be in error for producing the high CO2.

Jun 11, 2014 | 1998 Kia Sportage

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

1 Answer

If emmisions are okay is my catalytic convertor ok


You might want to check out the OBD trouble code site I will post the link for you...http://www.obd-codes.com/p0302

Sep 01, 2012 | 2004 Mazda RX-8

1 Answer

We recently replaced a glowplug on our 2003 VW Jetta tdi. We had to disconnect the power source. Since then, the door alarm wont stop ringing. We can't find the factory reset code. Can you help? Oh, it has...


Removing the battery connection for this procedure will cause diagnostic trouble codes to be stored in the engine control module. Erasing these DTCs and resetting the readiness code will require Volkswagen scan tool VAG1551/1552 or equivalent. The same results will occur when disconnecting engine management components while the key is in the on position. Some driveability problems may be noticed until the system re-adapts to operating conditions. OBD II readiness codes, which may be required for emissions testing, may also be erased. Convenience electronics (alarm systems, interior light control, power locks, mirrors, and windows) may need to be re-set using a VAG 1551/1552 or equivalent sacan tool.

Feb 03, 2010 | 2003 Volkswagen Jetta TDI

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

Audi A4 coil pack


There are 4 coils, one for each cylinder. Audi tend to replace one at a time to save costs. So yes this is probably quite likely.

Oct 04, 2008 | 2002 Audi A4

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