Toyota p0420 code sienna obd 2001 ii catalyst system located P0420 obd ii code on 2001 toyota sienna. after checking code p0420 mod P0171 code solved
P0420 OBD II code on 2001 Toyota Sienna. After checking code P0420 MOD
P0171 code solved
P0171 code solved - YouTube
P0420 OBD II code on 2001 Toyota Sienna. After checking code P0420 MOD