shikbas

Hello,i got new denso ones,could be deffecive .

lexus114

wait a minute,did i miss something ??

shikbas

sorry,i mean can these sensors be deffective from factory or transport/storage.

lexus114

well anything is possible. Why,r u having trouble ?

shikbas

i did replace B1S1 with denso part,the check engine light went away but the car was acting up as if it is hungry for gas,took it to the dealer and they said it is B1S1 needs to be replased

lexus114

did you reset the ecm after replacement? what year is your RX ?

shikbas

yes,i disconnected the battery for one hour,i think i have to go to advance auto to reset with the code reader

lexus114

what year is it ? and how many miles ? (just curious)

biff44

Not really likely unless you dropped it or hurt it with the wrench. Maybe the connector is not seated well? Are you sure you replaced the right one? There are two of them in the engine compartment.

according to this:
https://www.clublexus.com/forums/rx-...est-price.html

bank 1 sensor 1 is the one near the firewall