please read here:- P0140 Code Grand Prix - OBD-Codes.com
and here:OBD-II Trouble Code: P0420 Catalyst System Efficiency Below Threshold (Bank 1)
Hope that clears things up a bit...on the first one make sure you read the last post for sure.
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please read here:- P0140 Code Grand Prix - OBD-Codes.com
and here:OBD-II Trouble Code: P0420 Catalyst System Efficiency Below Threshold (Bank 1)
Hope that clears things up a bit...on the first one make sure you read the last post for sure.
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