Code PO420 & PO505 1999 acura cl 2.3
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1st Gear
Joined: Aug 2011
Posts: 1
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Code PO420 & PO505 1999 acura cl 2.3
Code PO420 came on 9 mos ago so i know i need to replace my CAT convertor but now PO505 code came on. does anyone think they are connected in any way? I need a smog soon
Lead Footed
Joined: May 2001
Posts: 3,415
Likes: 15
From: Plano - Texas
Not sure what the PO505 is off the top of my head, but the PO402 isn't necessarily a bad CAT. Run a bottle of RXP thru a 1/2 tank and retest. Many people pass the emissions test using RXP.
http://www.rxp.com/gaskicker.htm
Ruf
http://www.rxp.com/gaskicker.htm
Ruf
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