cueball1

2014 ML350 Bluetec with 62k miles. Fueled up this afternoon and ran some errands. Noticed the engine light on and stopped at an Autozone. The scan showed engine code P1188 "Inlet air pressure sensor circuit range/performance". It's a standard code not unique to diesels. No change in mpg according the lie-0-meter and seems to be running perfectly. Any ideas or suggestions? Couldn't find any threads with this code in a search of the forum. The generic websites say it's caused by an incorrect amount of fuel mixture ratio compensation or faulty fuel injection. Possible causes are listed as intake air leaks, defective injectors, incorrect fuel pressure, PCV, defective oxygen sensor, faulty MAF,

Searched all of MB world to no avail. Anyone have suggestions of what to check for first? Anyone else experienced this code? Thanks for any help or suggestions!