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1997 Lexus SC engine light

Tiny
LEXUS300SC9142
  • MEMBER
  • 1997 LEXUS SC
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 145,000 MILES
The car runs great, but the engine light stays on. When I asked about this lexus states to turn my car off while refueling, they said this may cause the problem. By the way, I don't refuel while the car is idling. Anyway, I disconnected the battery for about 5 mins and it went out for 2 days, but returned. What's the deal?
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Tuesday, March 11th, 2008 AT 11:54 PM

1 Reply

Tiny
NYC.ECHO.LEXUS.TECH
  • MEMBER
  • 20 POSTS
THE REASON YOUR LITE CAME BACK ON IS CAUSED BY A TWO TRIP LOGIC, WHEN YOUR ENGINE ECU MONITORS
ALL THE SENSORS ON YOUR VEHICLE IT TEST SOME TWICE @ A SPECIFIC THRESHOLD, BY REMOVING THE MEMORY POWER FROM YOUR VEHICLE DISCONNECTING THE BATTERY YOU RESET THE ECU LEARNED VALUE AND MONITORS
NOW THAT YOUR MONITORS HAVE BEEN TESTED SOME OR MULTIPLE SENSORS FAILED
IM GOING TO GUESS AN A/F SENSOR OR AN O2 SENSOR FAILURE
HOPE THAT HELP
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Sunday, January 18th, 2009 AT 11:42 AM

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