Check Engine light SC300
01-21-05, 07:10 AM
#1
Check Engine light SC300
this is the second time check engine light came on, after i reset it by taking the battery terminal off and put it back, light won't come on for about 1,000 or so miles, its weird any help would be appreciated its a 95SC300 5spd
01-21-05, 09:14 AM
#2
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Originally Posted by vredniykot
edit: Intellexual.com is down until further notice. It is no longer a Lexus web site so please move on.
~Alan
01-22-05, 12:57 AM
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Originally Posted by Ikrshinji
I had a similiar problem with mines. Turned out to be the gas cap. After replacing it, I had no more problems. Hope it's nothing big
holy crap i have never seen you post.
good to see its a useful one
01-22-05, 01:00 AM
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back to the topic at hand. Its really hard to diagnose anything without first pulling the codes. After you do that, we'll be able to tell you what it is.
When my egr started on the fritz (still is) i started pulling codes every couple hundred miles.
but again its hard to say anything until codes are pulled
When my egr started on the fritz (still is) i started pulling codes every couple hundred miles.
but again its hard to say anything until codes are pulled
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01-22-05, 11:58 AM
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in the engine bay youll find the diagnostics port (not sure where since its an sc4), but jumper ports T1 and TE1.
I believe thats it, they will be diagonally right next to each other. Someone else please confirm this.
I believe thats it, they will be diagonally right next to each other. Someone else please confirm this.
01-23-05, 01:40 PM
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ouch...
Code 21:
OXYGEN SENSOR SIGNAL/OXYGEN SENSOR HEATER SIGNAL
OPEN OR SHORT IN OXYGEN SENSOR OR OXYGEN SENSOR SIGNAL
good news is its probably an easy fix...bad news is the o2 sensors can be a little pricey
Code 21:
OXYGEN SENSOR SIGNAL/OXYGEN SENSOR HEATER SIGNAL
OPEN OR SHORT IN OXYGEN SENSOR OR OXYGEN SENSOR SIGNAL
good news is its probably an easy fix...bad news is the o2 sensors can be a little pricey
01-23-05, 03:01 PM
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Originally Posted by vredniykot
you know, i was just thinking - if it's a O2 sensor failing why does it go away after clearing and comes back later?
could it be possible that the cat. converter is going bad?
i'm not too familiar with the codes, is this code means that there is actual physical problem with the sensor itself?
could it be possible that the cat. converter is going bad?
i'm not too familiar with the codes, is this code means that there is actual physical problem with the sensor itself?
means the ecu isnt getting signal from the o2 sensor. It may be all clogged up and burnt out that its just not producing the same voltage anymore.
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