O2 sensor replacement
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Driver School Candidate
Joined: May 2004
Posts: 10
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From: California
O2 sensor replacement
Has anyone done this themselves? I got a CEL that was related to the O2 sensors. I found oem replacements off ebay for $50 each, so I just need to know if there are any tricks or suggestions to replace them. I got about 196K miles on the truck and still running strong!!
Driver
Joined: Nov 2005
Posts: 184
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From: CA
02 Sensor on a 1999 LX470
I just got a P0135 on my 99 LX this morning. What a bummer. Can someone tell me which side of the car the Bank 1 Sensor 1 is on? Passenger? or Driver Side? It looks like an easy self fix and an expensive trip to the dealer. Any input would be appreciated. Thanks!
Driver School Candidate
Joined: Mar 2008
Posts: 1
Likes: 0
From: California
I replaced both bank sensors and I have a bit to add to this. First off, they are both pretty easy, but there are a couple gotchas.
General gotchas:
1. You need a 22mm box wrench for the o2 sensor. Adjustable wrenches are too big, so get a box wrench.
2. It helps if you can find yourself a pair of short, thin arms to help with disconnecting the wires.
3. A creeper is nice for getting under the car.
4. If you get Bosch universal o2 sensors be aware that there are more than one style with the same model number. I managed to get two different ones and one of them is really not suitable for this car. I got one sensor with roughly 4cm strain relief and one with roughly 10cm strain relief. You want the shorter one, since the factory o2 sensor has short wires.
Left side gotcha:
It is a major pain to disconnect the o2 sensor if you don't jack the car up and get at it from underneath. If you have short skinny arms, you can probably do it from the outside, though. The tab that you need to press is on the side facing the front of the car and you can't see it.
This is the easier side to do
Right side gotcha:
If you loosen the brake line hardware, it makes things much easier.
You can clearly see the connector and tab that you press on this side.
I hope that helps.
General gotchas:
1. You need a 22mm box wrench for the o2 sensor. Adjustable wrenches are too big, so get a box wrench.
2. It helps if you can find yourself a pair of short, thin arms to help with disconnecting the wires.
3. A creeper is nice for getting under the car.
4. If you get Bosch universal o2 sensors be aware that there are more than one style with the same model number. I managed to get two different ones and one of them is really not suitable for this car. I got one sensor with roughly 4cm strain relief and one with roughly 10cm strain relief. You want the shorter one, since the factory o2 sensor has short wires.
Left side gotcha:
It is a major pain to disconnect the o2 sensor if you don't jack the car up and get at it from underneath. If you have short skinny arms, you can probably do it from the outside, though. The tab that you need to press is on the side facing the front of the car and you can't see it.
This is the easier side to do
Right side gotcha:
If you loosen the brake line hardware, it makes things much easier.
You can clearly see the connector and tab that you press on this side.
I hope that helps.
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