New to me truck, Error Code.....

[zmwatson18]

So in February I bought a clean 2016 Double Cab 1500 Z71 Silverado with 33k Miles on it. The odometer is at 36500-ish miles, and yesterday morning it was shifting hard, not as much power and the check engine light came on.

 

I went to Auto Zone and pulled the code P219B which is a bank 2 air/fuel in balance. I took it to the dealer and made a appointment for it to be worked on.

 

I purchased the Platinum protection package and the power train warranty is still in coverage, but if it's a bad O2 sensor or fuel injector I'm not sure if I will have to pay out of pocket, which is frustrating considering the truck JUST went out of bumper to bumper warranty and I just bought the truck a few months back so needless to say I'll be pissed if they make me pay out of pocket for a repair....

 

Today however, the CEL is still on but driving the truck to work was driving as normal again and I was getting 17.7 MPG in the city, which yesterday it was getting between 12-14 mpg.

 

I'm hoping that maybe it was just bad gas, but this is really irritating to say the least.

 

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[HeySkippyDog]

Try something simple first. Spray some Seafoam or CRC into the intake. Follow the instructions on the can (spray it downstream of the MAF) and hold about 2000 RPM while spraying.

Probably just a little carbon built up.

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[IndyRob K.]

I am getting a P219B. I just finished with the CRC and still no good. Under the hood it sounds like a air leak. No other codes but idle is rough. I did see a good amount of smoke after the 30 minute wait period so I know I didnt waste 30 bucks on nothing. I guess its off to the mechanic cause it seems to be getting louder.