How to fix Range Rover will not accelerate problem?

A middle aged man visited my car repair shop yesterday. The man drove a 2011 Range Rover, which was with 46,000 miles on it. He told me that his Range Rover would not response when he tried to accelerate, and sometimes the problem would come with an illuminated Check Engine Light.
After hearing this, I realized that there may be an electric fault with the car. In most cases, an illuminated Check Engine Light and an acceleration problem could indicate to engine breakdown, which you should definitely pay attention to. If a system trouble came up, the car computer would usually record the error history. So I connected the vehicle to a professional OBD2 tool for Land Rover, JLR mangoose, to read fault codes.
About half an hour later, the car diagnotic tool gave me three trouble codes: P010F, P023D and P011C. They mean Mass or Volume Air Flow Sensor A/B Correlation, Engine MAP-Turbo-Supercharger Boost variation and Charge Air Temperature / Intake Air Temperature Correlation respectively.
Accroding to the trouble codes, there was a big chance that the problem was in the air intake system. So I disassembled the air filter, and found it was dirty. Then I checked two intake manifold absolute pressure sensors and two air flow sensors, which were dirty, too.
I told the car owner about this, and he confessed that he rarely maintain the vehicle. This could be the reason that contributed to the acceleration problem and Check Engine Light. So I cleaned the intake manifold absolute pressure sensors and the air flow sensors, replaced the air filter and then cleared the trouble codes with the auto diagnotic tool. The vehicle could work normally then.