P0420
OBD2 trouble code · diagnostic guide
P0420 — Toyota Prius
As the P0420 code states, whenever the catalytic choked to a stage that the vehicle performance is greatly compromised this code will set in. The catalytic is cleaned and re-installed. Sometimes this code of P0420 also sets in if the oxygen sensors on the cat-con have stopped functioning. We also provide permanent delete function of this OBD2 code P0420.
