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Discussion Starter · #1 ·
Posted last week about having CEL codes 1223 and 1224. Checked O2 sensor and got almost no voltage. CO machine showed it ran much leaner with it unplugged, so I am leaving it disconnected for a few days until I can change it. Oddly, the CEL light went out, and has stayed out with it unplugged. Shouldn't the control unit be expecting it's signal?
 
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