Looking for help on a problem that has gone from intermittent to permanent. The latest limp home mode (LHM) came with engine running rough, sounding like a mild misfire/sputtering. Parts replaced include crankshaft sensor, both camshaft sensors, and throttle position sensor during previous bouts of LHM. The flashing ETC light is new, too. Multiple codes that are all over the charts: C121C, P161B, P2101, P2110, P2118, U0401, U1407, U1424, and U1425. Before this latest limp mode, the only code that ever popped up was P161B.