1993 SHO 'Code Frenzy'

Would appreciate some information on codes that appear for my SHO. Err... just a few :uhoh:

136
332
538
521
632
172
173
176
177
543Just had the news tonight... not too thrilled! Thanks in advance for any information ppl provide...

Frustrated SHO Gurl :banghead:

:rolleyes: ok... so may have found some possibilities...?

136 -- Indicates lean condition, left side
332 -- EGR Valve opening not detected
538 -- Insufficient change in RPM
521
632
172 -- Oxygen sensor indicates lean condition, right side
173 -- Oxygen sensor indicates rich condition, right side
176 -- Oxygen sensor indicates lean condition, left side
177 -- Oxygen sensor indicates rich condition, left side
543 -- Fuel pump circuit open; battery to ECA