P1147 2005 Nissan Sentra -

Question

smell dirty exhaust at right passenger windows when car is moving at a good rate of speed/ran car at high rpm with pcv open to clean carbon off O2 sensors/reset codes/ no engine lite until @6mi. then hit a pothole and lite immediately came on. Looked under car at rear O2 sensor and cable appeared flimsy.niss

Answer 1

check to see if the oxygen sensor wire has an damage to it.