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OBD code reader not resetting check engine light


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dgcars
New User

Apr 17, 2017, 5:01 PM

Post #1 of 10 (193 views)
OBD code reader not resetting check engine light Sign In

Hey guys,

I've been using my CAN OBD 2 AL310 car scanner no problem up until recently, and just this last week it stopped resetting the check engine lights. I've tried it on three different cars and it's not resetting.

The reader is reading the fault codes no problem, and when I click on "erase", it tells me that the codes are erased...but the check engine light is staying on. Three cars in a row.

Anyone heard of this before? Any ideas? I can't find anyone else online saying they've experienced this.

Thanks.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Apr 17, 2017, 6:13 PM

Post #2 of 10 (176 views)
Re: OBD code reader not resetting check engine light Sign In

What's the big mystery? If it doesn't work on any car, then it's broken. Try a different code reader.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



dgcars
New User

Apr 17, 2017, 6:16 PM

Post #3 of 10 (172 views)
Re: OBD code reader not resetting check engine light Sign In

If it IS broke that's exactly what I'll do.

But I have a hard time believing it's broke since it's only two months old and still reads the codes.

I'm just wondering if anyone has heard of this before; personally or from others.

Thanks.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Apr 17, 2017, 6:23 PM

Post #4 of 10 (168 views)
Re: OBD code reader not resetting check engine light Sign In

I don't know what kind of answer you're expecting to get. It's a $40 Chinese code reader that doesn't work.

You could try updating it. Try another code reader.



http://www.auteltech.com/...20Scanners/358.jhtml



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



(This post was edited by Hammer Time on Apr 17, 2017, 6:26 PM)


dgcars
New User

Apr 17, 2017, 6:27 PM

Post #5 of 10 (160 views)
Re: OBD code reader not resetting check engine light Sign In

Thanks very much.

If anyone else has experienced this please let me know.

Thanks guys.


kev2
Veteran
kev2 profile image

Apr 18, 2017, 6:04 AM

Post #6 of 10 (124 views)
Re: OBD code reader not resetting check engine light Sign In

Colleague added a link - contact them - tech support?


Discretesignals
Ultimate Carjunky / Moderator
Discretesignals profile image

Apr 18, 2017, 8:13 AM

Post #7 of 10 (112 views)
Re: OBD code reader not resetting check engine light Sign In

Maybe your code reader is erasing the code, but the code is reappearing because the PCM is detecting a hard fault.

What is the trouble code number? Year, make, model, and engine size?





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.

(This post was edited by Discretesignals on Apr 18, 2017, 8:16 AM)


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Apr 18, 2017, 1:47 PM

Post #8 of 10 (88 views)
Re: OBD code reader not resetting check engine light Sign In

He said he was having the same problem on 3 different cars. I doubt it's a hard code.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



dgcars
New User

Apr 19, 2017, 10:51 AM

Post #9 of 10 (64 views)
Re: OBD code reader not resetting check engine light Sign In

Thanks very much man, I think you were actually dead on with the hard codes not allowing the engine light to be reset.

Two of the three cars which weren't allowing me to reset their code had fault codes pointing towards electrical issues. Both cars seem to turn their check engine lights on and off at random; which seems to line up as well.

The third car was my own, and the check engine light successfully turned off this morning after trying again. My check engine light is always an evap code, so I am turning that light off about once every two weeks.

Thanks again fellas.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Apr 19, 2017, 12:00 PM

Post #10 of 10 (58 views)
Re: OBD code reader not resetting check engine light Sign In

So, why don't you just test it by inducing a code by unplugging a sensor and then plug it back in and clear the code.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.







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