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#1
12-14-2005, 09:52 AM
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error codes help
My service engine soon light comes on after about 10 or 15 minutes of driving. I had it scanned at Advance Auto parts,
1999 K-Series T=5.3L With Air Pump Set DTC's (codes) History DTC PO430 Catalyst Effeciency Below Threshold (Bank 2) MIL Requested Since IGN not run Since Clear P/F Can anyone help determine what is causing the error. O2 sensors (pre or post) or could it be the catalytic converter? 
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