hi thank you for the question hope this helps
12 means the system is functioning 32 is an egr code
32= Barometric pressure (BARO) sensor circuit failure
Exhaust gas recirculation (EGR) valve diagnostic switch -
closed during engine start-up or open when EGR flow
requested by ECM
Electronic vacuum regulator valve (EVRV) error (EVRV
controls EGR vacuum)
this code is for the EGR valve stuck.. you can try removing the EGR and cleaning it with Carib cleaner this might brake up the deposits in it.. if this dos not work the EGR valve bladder is shot and you should replace the EGR..
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Thanks
David