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Discussion Starter #1
Hi, we bought a 2016 Honda pilot exl 2wd about 3 weeks ago. The next morning the engine light came o with an o2 sensor code. The dealership will not help. We changed the sensor and the same code came back on. It started running a little rough so we changed spark plugs and still the engine light came back on. Any suggestions?
 

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Did you buys this from a Honda dealership? Because this is a WELL known issue.

Whats the code?
Were there any other codes?
What brand of sensor did you install?
Which specific sensor did you replace?

There are 4 O2 sensors, downstream rear, downstream front, and two upstream sensors (same part number for upstream).

You likely need a PCM software update, as the PCM is misinterpreting the issue as a bad cat.
HOWEVER - you might also need all new fuel injectors.

There is a TSB for this - the dealer instructions are to do a software update for the PCM then do an injector balance test. If it fails the balance test, you get new injectors. They are covered under the powertrain warranty if this is the case.


 
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Discussion Starter #3
We replaced the upstream bank 2 with a bausch brand sensor. We bought it from dodge dealer.
 

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We replaced the upstream bank 2 with a bausch brand sensor. We bought it from dodge dealer.
I'd put your OEM sensor back in there, and take it to a Honda dealer for the PCM update.... then see what they say. If you want to arm yourself - search this site for "P0430" and/or "injector" and look at all the problems with the 2016 model. Some people are getting Honda to cover the expense, but it depends on how much warranty you have.

Assuming the Dodge dealership didn't offer any warranty?
 
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