P1151
A Heated Exhaust Oxygen (HO2S) sensor indicating lean at the end of a test is trying to correct for an over-rich condition. The test fails when the fuel control system no longer detects switching for a calibrated amount of time.

Fűtött Kipufogógáz oxigén (HO2S) érzékelő hiba

p1131
A code P1131 means that the passenger side, front oxygen sensor is reading lean, and not switching properly.
az utas oldali oxigen sensor rossz vagy gyenge jelet olvas oka:
vakum hiba vagy keves uzemnanyag nyomas.. nezd meg PVC konyok-csoveket a szelepeknel

C