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| P0138 and check engine light http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=3&t=42196 |
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| Author: | stevemcc [ Mon Apr 13, 2009 1:18 am ] |
| Post subject: | P0138 and check engine light |
Had a check engine light today - pulled the codes with the on off on off etc and got a P0138. Did some digging here and went for a dig under the KJ. All seemed ok, once I'd got the mud cleaned off. Put it back together and started up again - no engine light, but the code is still there. So my question is - if the lights off is all now good, or does the fact that the code is still there mean there is still a problem? I've done just over 45,000K's and am just overdue for a service but that wouldn't be the cause would it? |
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| Author: | ATXKJ [ Mon Apr 13, 2009 3:11 am ] |
| Post subject: | |
once you fix a problem it takes 3 engine cycles to clear a CEL by itself - an engine cycle is start from a low temp warm to operating just off/on doesn't work. but most of the code readers will clear code immediately to determine if you fixed the problem. (also dependent on your code reader - you may be able to read old codes i.e. the Chrysler ones can read back a fairly long history even after you cleared it) |
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