We put in new oxygen sensor and now whenever my husband drives the truck over a rough road the engine light comes on. It never comes on when I am driving the truck. advanced says the code reflects bad #1 injector. does anyone know how many oxygen sensors our truck has. Hubby could only find one. It is a 2005 dodge dakota 4 door crew cab with 4.7 v8 engine. If it has more than one, where might they be? thanks

 

My 05 Quadcab 4.7 4x2 has 4 02 sensors 2 in front cats and 2 in back