A little additional info: I've seen code P2626 (O2 Sensor Pumping Current Trim Circuit/Open) intermittently, as well. I know high-flow cats are prone to throw codes, so I wrote it off to that, but am now thinking I should have had it checked. The car started idling hard at startup a few weeks ago. I thought it was the colder weather, but I'm starting to wonder if the O2 sensor is bad. All the symptoms seem to fit bad O2 sensor.
Last edited by KarnoDal; 02-07-2015 at 06:32 PM.
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