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Check engine light stays on even after i disconected battery for 2 days

Check engine ligth stays on i disconected the battery for 2 days i replaced the front converter for emission problem .tried to resset the computer but light stayed on

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  • Cars & Trucks Expert
  • 149 Answers

Your computer will store the fault code till it gets reset either by scan tool, or by operating the vehicle for at least 50 to 80 "good trips", trips that the ecm found no fault. It is possible there are other faults that the ecm has seen. OBDII systems cannot be erased like the older systems could be erased by the battery being disconnected.

Posted on Apr 21, 2013

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Posted on Jan 02, 2017

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  • 651 Answers

SOURCE: check engine light/2003 toyota CE

have you had a diagnostic code check? if not i'd start there. it sounds like it might be a oygen sensor, but before spending money on it, it really should have a diagnostic test to tell you exactly whats causing the problem.

Posted on Nov 28, 2008

  • 740 Answers

SOURCE: Emission Control System

To accurately diagnose this problem , you should have this car check by a computer to see exactly which component is BAD. Here is my suggestion ITS FREE.. Go to an auto-zone and have them put this vehicle on a code scanner ITS free and see what the code is it may be something like a purge valve system leak or even an 02 -oxygen sensor. Good luck and thanks for using FIX Ya .. contact if you need more help.

Posted on May 12, 2009

  • 60 Answers

SOURCE: replaced bank 1 sensor 1 O2 sensor with an OE

Those lights indicate an issue with ABS or traction control systems. In order to properly diagnose the problem the vehicle's codes will need to be read with a scanner.

Generally speaking there is no danger in driving the vehicle but be aware you may not have functioning traction control and/or ABS while those lights are present.

Posted on Feb 01, 2010

toneman2121
  • 775 Answers

SOURCE: 1996 Probe check engine light stays on

what is the code?

Posted on Feb 24, 2010

  • 2841 Answers

SOURCE: check engine ligths comes in.

You have a problem with the emissions system. Have the ECU scanned at almost any Auto Parts store. The code it retrieves will tell you what part is being effected. Not necessarily the defective part but what is being effected.

Posted on Sep 21, 2011

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