Cel?
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Joined: Jul 2014
Posts: 74
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From: NJ
Cel?
About 2 months ago I had the CEL come on on my 98 GS 400.The code was the 420 code.Dealer changed out the oxygen sensor no worries for about a month.Than CEL comes on again for about a day then goes off.Now about a month later it does the same thing.Went on for a day and is now off.Any idea what would do this?Could this be a bigger problem?
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Pole Position
Joined: Oct 2013
Posts: 300
Likes: 6
From: TN
About 2 months ago I had the CEL come on on my 98 GS 400.The code was the 420 code.Dealer changed out the oxygen sensor no worries for about a month.Than CEL comes on again for about a day then goes off.Now about a month later it does the same thing.Went on for a day and is now off.Any idea what would do this?Could this be a bigger problem?
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Pole Position
Joined: Oct 2013
Posts: 300
Likes: 6
From: TN
It doesn't matter if the CEL is on now or not. If it came on at all, then the car dropped codes into memory and you should be able to get them with a code reader. The codes will not be erased except with a code reader or in some cases when the condition has been corrected. The fact that the light comes on and off would lead me to believe that a condition still exist.
Last edited by ttaylor993; Dec 4, 2014 at 05:55 PM.
Driver School Candidate
Joined: Oct 2013
Posts: 7
Likes: 0
From: missouri
i go thru this crap every year. i am having issues with monitors not completing= Fail
plan to get OBD2 reader for next time and what is name of android app??
thanks,
Polo
I hear the app Torque is great but it's not available on iPhone apps. I used OBD2 Fusion. It showed the MONITOR REDINESS. If you disconnect your battery to clear the check engine light before smog you need to drive through a series of patterns that check the vehicles sensors. The app will tell you when they are complete and here is the way to get it in readiness mode. http://www.ih8mud.com/tech/tsb/LexusLX450/eg002l02.pdf
Last edited by lexo98; Dec 5, 2014 at 08:33 PM. Reason: Added link
Driver School Candidate
Joined: Oct 2013
Posts: 7
Likes: 0
From: missouri
MY problem again is not being able to complete both catalyst and evap monitors after reset check engine light. Usually light comes back on after 2 drive cycles... SO FRUSTRATING
I plan to purchase this for $6.59 at Banggood.com
ELM327 V1.5 Bluetooth OBD2 II Car Auto Diagnostic Scanner
Unfortunately gonna take 7-20 biz days to receive
Thomas, u have any tips for drive cycle??
Polo