Engine suddenly seems to misfire and revs very high

First may i say thanks for some great information i've found on this site.

i have a 2011 Prius with 68k miles..a few months ago it started to misbehave.
It starts revving and seems to misfire and shudder....it can happen when stationary or slowing down...then it just settles down again.

A friend checked it with a diagnostic gadget and it gave the code for P0113 and P0102 relating to the Mass airflow sensor. He sprayed around the intake manifold and pipes to check for leaks, but nothing found.

Should i just replace the mass airflow sensor?

Thanks in advance.

 

Thanks for the reply.
He used the correct cleaner and did the MAF.
The car runs fine for weeks with no problem then suddenly develops this high revs and misfire and shudder.
They cost about £40.00 here thats $50.00 approx...wouldn't like to be paying $250.
I recon i may as well just replace it.
Thanks

 

No...no work done on the intake...

i forgot to say...since cleaning the MAF sensor, the error codes no longer show when my friend rechecked it....... the problem is happening far less than before...maybe every few weeks or so...so the cleaning helped but not cured the problem.

What would you advise i do next ?

Thanks for your help..

 

One thing know now is that it was cleaned with Carburetor cleaner,
I fear i'm now going to be told that's wrong ?

 

After buying it 12mths ago i noticed some overspray just below the front bumper, so i think it's had some damage.
In the UK if a car is damaged beyond very minor it has to be logged and nothing is showing.
It's interesting that the Air conditioning isn't working and i was told it's empty...not got round to getting it fixed yet.