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-   -   Chech engine light and NAPA (http://www.wranglerforum.com/f210/chech-engine-light-and-napa-214672.html)

Eddie2005unlimited 01-25-2013 08:38 AM

I rolled into my local NAPA this morning and they informed me that they don't check the lights code due to it only provides several possible problems.

They said to only way to be sure is to take it and get it professionally scanned? Is this true? I want to fix the problem and get the light off .

DevilDogDoc 01-25-2013 08:41 AM

Or you can buy a scanner...

91badass 01-25-2013 08:41 AM

I know my local autozone and oreillys dont check the codes anymore, Finally just bought the reader, definatly worth it.

Curro 01-25-2013 08:46 AM

25 Attachment(s)
Advance Auto will still check codes. and pulling a code can definitely point you in the right direction of a problem....

TnDz TJ 01-25-2013 08:50 AM

Key in ignition..... on-off-on-off-on

(do not start )

Should give you CEL codes on your odometer display... then research codes via PC....

Jerry Bransford 01-25-2013 10:53 AM

Yep turn your ignition switch on-off-on three times within 5 seconds & then leave it on. Give it time & it will then display any diagnostic trouble codes that are stored. If you do it right it will always at least display the word Done.

This works for all TJs except 98-00.

sdptrey 01-25-2013 01:37 PM

I have tried it on a 2005 tj all i get is the check engine light blinks 10 times

Eddie2005unlimited 01-25-2013 01:52 PM

Quote:

Originally Posted by TnDz TJ
Key in ignition..... on-off-on-off-on

(do not start )

Should give you CEL codes on your odometer display... then research codes via PC....

Thanks TnDz TJ and Jerry!

P0133 is the code

monkeee2002 01-25-2013 01:54 PM

My local autozone still checks codes.
They won't "clear the codes" for you anymore, some kind of company policy I guess. But he let me borrow his code reader while he had it hooked up, so I could clear them myself :thumb:

WatchUr6 01-25-2013 01:54 PM

Quote:

Originally Posted by curro (Post 3275947)
advance auto will still check codes. And pulling a code can definitely point you in the right direction of a problem....


x2

DevilDogDoc 01-25-2013 01:58 PM

Quote:

Originally Posted by Eddie2005unlimited (Post 3277081)
Thanks TnDz TJ and Jerry!

P0133 is the code

O2 sensor, slow response.

Dextreme 01-25-2013 02:14 PM

A few years ago I bought one of these scanners and I probably use it a dozen times a year on my vehicles (mostly on my diesel truck that is chipped) and friends vehicles to read and clear codes. Worth the $60 alone to not have to work with Autozone bozo's.

CAN OBDII Code Reader with Multilingual Menu

Gary2 01-25-2013 02:15 PM

my 05 says "DONE" so I am guessing its because I have no codes stored. Maybe try a different number of on-off-ons...... Now that I think of it I did use it a while back ... the gas cap was left loose and the code was shown on my Odometer .

Dextreme 01-25-2013 02:15 PM

Quote:

Originally Posted by Gary2 (Post 3277155)
my 05 says "DONE" so I am guessing its because I have no codes stored. Maybe try a different number of on-off-ons

Done = No codes

Eddie2005unlimited 01-25-2013 02:16 PM

I read a thread that I think said that this was caused by pumping the gas pump multiple times to fill up.

Is that true? Because I definitely have been doing that.

Or do I need to replace the O2 sensor ?

TnDz TJ 01-25-2013 02:29 PM

As stated... The O2 is slow to read. Replace it.

Jerry Bransford 01-25-2013 03:03 PM

Quote:

Originally Posted by Curro (Post 3275947)
Advance Auto will still check codes...

For those of us here in California, such stores are no longer legally allowed to do that. Only shops with certified repair staff are allowed to pull codes. :facepalm:

Curro 01-25-2013 04:56 PM

25 Attachment(s)
Quote:

Originally Posted by Jerry Bransford (Post 3277293)
For those of us here in California, such stores are no longer legally allowed to do that. Only shops with certified repair staff are allowed to pull codes. :facepalm:

Sounds like a pretty silly law.. As for the ignition on and off trick, I completely for got about that. I use my code reader for everything. Great little investment, everyone should own one...

RevCo666 01-25-2013 05:09 PM

I had purchased a bluetooth OBD2 elm reader off the internet a few years ago, never got it to work, tried with laptop and Android tablet. Not sure if was because my 2001 Mazda truck was not compatible or not? Unfortunately a quick item to pond :) Maybe someone else can make it work... Cabled version are extremely reliable, I may reinvest in one soon just for the sakes of owning one.

Neltronic 02-14-2013 12:01 AM

Quote:

Originally Posted by Jerry Bransford (Post 3276351)
Yep turn your ignition switch on-off-on three times within 5 seconds & then leave it on. Give it time & it will then display any diagnostic trouble codes that are stored. If you do it right it will always at least display the word Done.

This works for all TJs except 98-00.

Just tried this on my 98se. Worked but didnt display any codes. Still want to get an actual reader tho.

amiller 02-14-2013 12:08 AM

Quote:

Originally Posted by Curro (Post 3277733)
Sounds like a pretty silly law..

Its Kalifornia...what do you expect?

gmiller0737 02-14-2013 06:21 AM

Quote:

Originally Posted by Eddie2005unlimited (Post 3275921)
I rolled into my local NAPA this morning and they informed me that they don't check the lights code due to it only provides several possible problems.

They said to only way to be sure is to take it and get it professionally scanned? Is this true? I want to fix the problem and get the light off .

Parts guy's are Not Mechanics/Technicians Just becuase a certian code is set does not always mean a part is bad some codes will affect other codes,It's a sales tool for places like Auto Zone they will say well you have a Po300 (Random Misfire code) so you will need to do a full tune up spark plugs-distributor cap & rotor + plug wires, While that may fix the code it may not what if the PO 300 is caused by other issues like a vacuum leak or other issue? They do no testing & just read codes there is more to it than that! As a ASE Master Tech & I also have the ASE L1 Advanced Level Engine Performance Certification I have seen quite a few vehicles that have had parts thrown at them with almost No testing done! many times if basic troubleshoting was done the problem would have been found & many $ that were wasted on unneeded parts saved.

neverfastenough1 02-14-2013 10:08 AM

Quote:

Originally Posted by gmiller0737 (Post 3367078)
Parts guy's are Not Mechanics/Technicians Just becuase a certian code is set does not always mean a part is bad some codes will affect other codes,It's a sales tool for places like Auto Zone they will say well you have a Po300 (Random Misfire code) so you will need to do a full tune up spark plugs-distributor cap & rotor + plug wires, While that may fix the code it may not what if the PO 300 is caused by other issues like a vacuum leak or other issue? They do no testing & just read codes there is more to it than that! As a ASE Master Tech & I also have the ASE L1 Advanced Level Engine Performance Certification I have seen quite a few vehicles that have had parts thrown at them with almost No testing done! many times if basic troubleshoting was done the problem would have been found & many $ that were wasted on unneeded parts saved.

Funny, they have never used it as a sales tool toward me. The light came on on my wifes truck on Monday. Stopped by Advance to have the code read and he said misfire on #4 cylinder. I said thanks and left. Light came on on my TJ on Tuesday. Took it to Auotozone to have it read at lunchtime. He printed out the results and I said thanks and left. Tightened my gas cap up, borrowed a scanner and turned the light off. I have actually gone into Advance and said can I borrow your scanner to check a code and they have let me take it to the parking lot. Once the guy said they werten't allowed to turn the light off so he looked the other way while I pushed the yes button. They can only turn it off if you have a repair reciept for the issue. None of them have ever tried to diagnose the issue.

gmiller0737 02-14-2013 10:13 AM

Quote:

Originally Posted by neverfastenough1 (Post 3367734)
Funny, they have never used it as a sales tool toward me. The light came on on my wifes truck on Monday. Stopped by Advance to have the code read and he said misfire on #4 cylinder. I said thanks and left. Light came on on my TJ on Tuesday. Took it to Auotozone to have it read at lunchtime. He printed out the results and I said thanks and left. Tightened my gas cap up, borrowed a scanner and turned the light off. I have actually gone into Advance and said can I borrow your scanner to check a code and they have let me take it to the parking lot. Once the guy said they werten't allowed to turn the light off so he looked the other way while I pushed the yes button. They can only turn it off if you have a repair reciept for the issue. None of them have ever tried to diagnose the issue.

I guess it just depends on the store & actual employee,I have saw quite a few that have had every part under the sun thrown at the problem & the soloution was simple once actual testing was done.

neverfastenough1 02-14-2013 10:48 AM

Quote:

Originally Posted by gmiller0737 (Post 3367774)
I guess it just depends on the store & actual employee,I have saw quite a few that have had every part under the sun thrown at the problem & the soloution was simple once actual testing was done.

Probably does, but if a ASE Master Tech is diagnosing a problem and his paid allotted time to diagnose it runs out, he starts throwing parts at it. You would wish he wouldn't but he can't make money working for free trying to diagnose the problem.

Razz 02-14-2013 09:18 PM

Quote:

Originally Posted by gmiller0737 (Post 3367078)
Parts guy's are Not Mechanics/Technicians Just becuase a certian code is set does not always mean a part is bad some codes will affect other codes,It's a sales tool for places like Auto Zone they will say well you have a Po300 (Random Misfire code) so you will need to do a full tune up spark plugs-distributor cap & rotor + plug wires, While that may fix the code it may not what if the PO 300 is caused by other issues like a vacuum leak or other issue? They do no testing & just read codes there is more to it than that! As a ASE Master Tech & I also have the ASE L1 Advanced Level Engine Performance Certification I have seen quite a few vehicles that have had parts thrown at them with almost No testing done! many times if basic troubleshoting was done the problem would have been found & many $ that were wasted on unneeded parts saved.

This is true...I've seen many times where Autozone reads a code and sells that part...In my area O2 sensor codes seem popular...O2 stuck rich? Replace it....What alot of people don't realize is a code is simply that the engine computer doesn't like a particular reading...it does not mean that particular part is bad...I mean, install a new O2 sensor but don't plug it in...It'll throw a code...Does that mean the sensor is bad?...No, it means the computer doesn't like the readings...


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