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The engine will not idle and I have code 44, O2 lean.
I am trying to check some sensor readings but I can’t connect to the ECM. I am using TunerPro_RT. The ECM is a 165, 32B bin. I haven’t scanned in awhile but when I did the engine was always running. Not sure if my interface cable is still working. My question is can I scan with the engine off?