Possible Causes

WARNING: This page is about a different car, the 2018 Land Rover Range Rover, 2017 Land Rover Range Rover, 2016 Land Rover Range Rover, 2014 Land Rover Range Rover, and 2013 Land Rover Range Rover. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

Monitor description. Mass air flow sensors left/right flow to high
This DTC is set when the powertrain control module has measured a signal voltage above a specified range but not necessarily a short circuit to power, gain too high.

Blocked air filter
Other related DTCs
Air induction system, incorrectly installed components, loose hose clips or air leakage
Mass air flow sensor contamination by oil or debris
Electric throttle blade contamination by oil or debris
Mass air flow sensor circuit, short circuit to ground, short circuit to power, open circuit, high resistance
Throttle adaption failure