Anyone know what can cause a code 43…fuel supply system? Could it be a faulty pump or O2?
I just had this at the beginning of the year, 4 out of 5 times its the o2 sensor. replaced it fixed it right up.
Cool…just making sure.
make sure to get a denso or something similar.
I just grabbed an OEM one from a friend who converted to OBD1. I’m probably going to switch out injectors also just to be safe since it’s extrememly high miles.