Question about 2000 Toyota Corolla
Its was ok when we went to jersey city but when we came home i saw the engine light on so i used my OBD tester and it appear that the code is P0420 and then i erased the diagnostic trouble code but the problem is when i turn off the engine the dash board,head light,tail lights stays on,i perform the erase diagnostic trouble code but nothing happen the last thing i did is to disconnect the negative cicuit in the battery so it wont discharge the starter,can you please help me with this.
The P0420 that you are getting may be an inoperative air/fuel sensor (the actual code is "catalyst system efficiency below threshold". This code will not affect the head/tail lamps or dash lights.
You may have a bad headlamp switch.
Posted on Sep 19, 2008
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Posted on Jan 02, 2017
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