P219B Bank 2 Air/Fuel Ratio Imbalance

[2011LR4LUXAA]

Hi,

I was driving my 2011 LR4 today and the check engine light came on. I pull the GAP scanner out to read the code and got this code: P219B Bank 2 Air/Fuel Ratio Imbalance. I tried to cleared it and see if it go away but it didn't. I figured there is something more serious that needs to be address. I did a little research on this and could be a O2 sensor, mass air flow sensor or something more serious.

Has anyone have had this error before and what was the fix?

Any suggestions or recommendations will be appreciated.

Thanks

 

[2011LR4LUXAA]

I fixed the problem. Check engine is off..

 

[avslash]

@2011LR4LUXAA

What was the issue?

 

[mmbirtcher]

Dragging an old thread back up, @2011LR4LUXAA what was your solution? Or can anyone else suggest a solution?

thanks,

 

[jlach993]

it means there's unmetered air coming in from somewhere....most likely somewhere in the exhaust. do a smoke test on the exhaust and see if there are any leaks you need to weld. It could also be an o2 sensor failing.

 

[mmbirtcher]

Problem solved with new engine air filters and cleaned MAF sensors.

 

[mmbirtcher]

Hmmm... The code returns about once per week and resets with GAP IID tool. Don't know anything about smoke testing an exhaust but I assume a good exhaust shop would? I can run waveforms somehow on the O2 sensors although I have little knowledge there either. Car continues to run just fine though.