Thread: OBD II P0341 Scan Code
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Old 10-29-2004, 08:54 PM   #12
sierrap615
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Re: OBD II P0341 Scan Code
DTC P0420
Catalyst System Low Efficiency

most likey a bad cat, but possibly a bad O2 sensor or leak in the exhaust system. take it to you local saturn dealership, that cat may be covered by the 8yr federally mandated warrenty
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