Freelander Airflow meter change - fault code reset?

My local (very good) garage diagnosed a faulty airflow meter on my Freelander DI after I reported a sluggishness in acceleration and an increase in fuel consumption.

I duly replaced the part myself as they could not get hold of one that day but I'm not convinced things have improved that much - does a fault-code need to be reset or should replacing the part have cured it? (assuming it was the problem in the first place).

Thanks in advance

Is the MIL lit?

No MIL, no warning lights at all

then no reset will be needed try Esso new fuel you should see a difference I have

Was the replacement new?
Iirc if a fault code was generated it should be errased as current but remain logged as a historic fault after around 40 drive cycles

Sorry for delay in replying - yes MAFF was new however it was one of these 'compatible' units as I baulked at the £150 cost of a LR part ......

however it was one of these 'compatible' units

Click to expand...

a.f.a.i.k. .. those compatible after market types don't give the proper signal ..
so performance and mpg can suffer ..

either fit the original spec bosch ( ££££ :-( .. )

or get a mafam unit .. or synergy unit from ..
Tuning-diesels for low cost diesel tuning.
and fit the cheaper but ( evidently ) more reliable 'pierburg' maf ..

Pierburg mafs from tuning-diesels.com

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teddywood1 said:

then no reset will be needed try Esso new fuel you should see a difference I have

Click to expand...

What's this new Esso fuel you keep mentioning?

As it happens I generally use Esso (although I prefer Shell) and the current tankfull seems to be lasting forever. Nearly 400 miles recorded and the needle has only just passed the halfway mark. Usually it'd be at the 1/4 mark by now.