What brand o2 sensor

[Highway]

Looking on rockauto at o2 upstream sensors, what brand works best I see denso and ntk. I am throwing P219B code and ihave tightend intake bolts and changed spark plugs and light still comes back after erasing soi figure I would try o2 sensor

 

[62Blazer]

I generally recommend OEM (i.e. Mopar in this case) for sensors, but do understand they cost twice as much. Though either of those would probably be fine.
As a side note I'm not a big fan of just randomly replacing sensors and other parts hoping you get lucky. Have you done any trouble-shooting at all?

 

[Ken226]

Yea, what he said ^^^^

The o2 sensor being bad is amongst the lesser likely causes of that code.

More likely would be something like loose intake manifold bolts.
or a partially clogged fuel injector
or low fuel pressure from a weak fuel pump
or an exhaust leak at the collector

Check live data with a scan tool too see what the o2 sensor data and the long term/short term fuel trims look like. An o2 sensor that is slightly out of range is likely not bad and showing an actual ratio imbalance.

O2 senor data that is dead, flatline, or wildly out of range will more likely be a dead sensor. Compare the sensor voltage to the other 3.

 

[Highway]

The p219b code is an air/fuel ratio imbalance in bank 2 of the engine.I checked the intake bolts which were a little loose, which cylinder injector should i check. Also tailpipe tips look a little more black than usual. Doesn’t seem to have any fuel pump issues

 

[Wild one]

The p219b code is an air/fuel ratio imbalance in bank 2 of the engine.I checked the intake bolts which were a little loose, which cylinder injector should i check. Also tailpipe tips look a little more black than usual. Doesn’t seem to have any fuel pump issues

If you're lifting the fuel rail to check injectors,why not pull all them and clean them and check their spray pattern,they can be easily home cleaned for about 15 bucks including the can of carb/choke cleaner.
Theres a video in the first post,that is close to how i clean them.

Injector cleaning

Supposed to go cold and snow for the next 10 days,so i figured it was a good time to pull the injectors and give them a cleaning.Got them soaking in injector cleaner,where i'll probably leave them for a couple days before using some carb and choke cleaner to wash them out using my old homemade...

www.ramforum.com

 

[nlambert182]

Agree with @Wild one about going ahead and cleaning them. But if you do determine it to be a sensor, always stick with OEM on these trucks. FCA products are picky about sensors and don't usually like aftermarkets too well.

 

[mdc1990zr1]

Agree with @Wild one about going ahead and cleaning them. But if you do determine it to be a sensor, always stick with OEM on these trucks. FCA products are picky about sensors and don't usually like aftermarkets too well.

NTK were the OEM for my Jeep wrangler