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Mar 29, 2022 | 12:50 PM

#16

Jwconeil

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From: Indiana

What are the odds that this is the problem?

My car previously threw P0156 constantly, and we discovered an O2 eliminator poorly installed by the previous owner. My Lexus master tech buddy fixed it with the connectors pictured above.

Here is the original issue thread.

https://www.clublexus.com/forums/is-...e-problem.html

Now my car has moved on to the P0157 code issue. Do you think it is likely because the wires have been hacked? It only happens on the passenger bank.

If so, what’s the put it to bed… never deal with it again fix? A new wiring harness?

Mar 29, 2022 | 01:04 PM

#17

Jwconeil

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From: Indiana

Better picture of questionable connector. One of the wires is exposed, and had been covered by some kind of rubber gel to keep moisture from it.

Mar 29, 2022 | 02:52 PM

#18

lobuxracer

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From: Georgia

This is exactly why I don't buy used cars.

Yes, it's certainly possible the connectors are not happy. If it were mine, I'd ditch them and replace them with uninsulated butt connectors and put heat shrink tubing over the connectors. I'm big on introducing as few opportunities for failure as possible, and any connector you can take apart is not as reliable as one you can't take apart.

Mar 29, 2022 | 03:54 PM

#19

Jwconeil

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From: Indiana

Quote:

Originally Posted by lobuxracer

What would you do with the partially stripped wire that they tapped (second from the left)?

This has driven me borderline insane… but everything else that could be wrong has been replaced.

Mar 29, 2022 | 07:38 PM

#20

lobuxracer

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From: Georgia

I'd pop the wire out of the connector and put shrink tube over the damaged area after cleaning it up with alcohol.

Apr 4, 2022 | 12:36 PM

#21

imo386

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Joined: May 2018

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From: New Jersey

As I previously mentioned in this thread before, I have been having this exact same issue/code for the last six months. Very annoying. After trying different things, I gave up and went to the dealership, thinking this might be an ECU issue. Fortunately for me and my wallet, they found a broken wire near the ECU from the bank 2 sensor 2 O2 sensor, and fixed it at no cost. Issue seems to be resolved now.