Scan code first and clear it and see if it comes back. In the meantime, go look up what the code really means and not what the scanner said. The scanner points you in a direction. Doesn't mean it is absolutely right but look that way.

My 99 C280 said the BOTH sides had lean O2 sensor readings. Was it correct? In a sense. BOTH sides were lean because the MAF said there was less air than there was and the ECM cut the injector pulse width and thus the O2 sensors reported that BOTH banks were lean. BOTH sensors going out at the same time is highly unlikely as opposed to 1 MAF.

Also your injectors, if you are like most people, have never been removed for cleaning and testing. I do that every 100K for daily drivers and every 3 years for the Vette, ATVs and Jetskis.

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01 Ford Excursion Powerstroke
99 E300 Turbodiesel
91 Vette with 383 motor
05 Polaris Sportsman 800 EFI
06 Polaris Sportsman 500 EFI
03 SeaDoo GTX SC Red
03 SeaDoo GTX SC Yellow
04 Tailgator 21 ft Toy Hauler
11 Harley Davidson 883 SuperLow