Changed By: Tony in Whittier Change Date: March 03, 2018 01:30PM Failed readiness status on my smog check.
I had a P1118 and did not replace the O2 sensor (bank 2, driver side, post-cat) about 1550 miles ago. I cleaned the MAF, replaced the air filter and reset the memory. CEL never returned, but I have not checked the readiness since then. Reading more about it, I probably should have replaced the O2 sensor back then due to the readiness issue.
I have 2 spare new pre-cat O2 sensors. I believe that the sensors are universal, except for the harness length. I found that the post-cat harness is 16.7", the pre-cat is 10.8". I got under my car, looked and felt the routing of the post-cat harness. It appears that the excess length is coiled up.
Has anyone ever used a pre-cat sensor in the post-cat sensor location? Experience any problems with the installation? I have a short time to correct and get re-checked for smog. Plus, at least $100 to get a new one in 3 to 5 days.
2000 S, ~60k on the post-cat sensor. California car.
Thanks.
Original Message
Author: Tony in Whittier Date: March 03, 2018 01:26PM Failed readiness status on my smog check.
I had a P1118 and did not replace the O2 sensor (bank 2, driver side, post-cat) about 1550 miles ago. I cleaned the MAF, replaced the air filter and reset the memory. CEL never returned, but I have not checked the readiness since then. Reading more about it, I probably should have replaced the O2 sensor back then due to the readiness issue.
I have 2 spare new pre-cat O2 sensors. I believe that the sensors are universal, except for the harness length. I found that the post-cat harness is 16.7", the pre-cat is 10.8". I got under my car, looked and felt the routing of the post-cat harness. It appears that the excess length is coiled up.
Has anyone ever used a pre-cat sensor in the post-cat sensor location? Experience any problems with the installation? I have a short time to correct and get re-checked for smog. Plus, at least $100 to get a new one in 3 to 5 days.