how can I check for engine trouble codes without a code reading device?

1992 LEXUS SC 400
20,000 MILES
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JREEDN
  • MEMBER
  • 1 POST
can I check to see if any engine codes are in error without a code reader
Jul 16, 2012 at 4:47 PM
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IMPALASS
  • ✓Experienced Mechanic
  • 3,112 POSTS
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Jul 16, 2012 at 5:04 PM
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