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
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can I check to see if any engine codes are in error without a code reader
Jul 16, 2012 at 11:47 PM
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IMPALASS
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Is this what you are looking for
Jul 17, 2012 at 12:04 AM