'02 QX4 - P1147

[brickbox]

Got the P1147 code on my Q. Reset it a couple of times and its repeatable and turns back on.
Any tricks/tips to be aware of when I go to replace the O2 sensor? P1147 is the downstream, passenger side, post cat - correct?

Thanks.

[carldu]

A clogged vacuum hose in the EVAP canister can cause P1147 code also so I would inspect it.

[brickbox]

Thank you. I inspected the hose over the weekend and it was clear. So I went ahead and replaced the bank 1 downstream O2 sensor with a Denso unit. The job wasn't bad outside of having to fish the sensor down by the firewall. No more CEL and the Q is running just great