I have been helping a friend with his 1.8turbo golf mk4.

He brought it round to mine as I have VAG-COM,

He had 2 lights on the dash, The emissions control light and the EPC.

I scanned the car and it showed MASS AIRFLOW SENSOR (G70) low reading,
I cleared the codes and scanned it again but the same fault was showing.

I got a new Bosch MAF and fitted it for him, then cleared the codes and both lights
went out and stayed out.

I re-scanned it and it was clear, no faults shown.

Its been running fine almost a week but now both the same lights are back on
and I scanned it again today to be greated with the above fault.


Mass airflow reading to low.



What would be causing it to knock out a new genuine Bosch MAF in just under a week?
And what does the EPC light have to do with the MAF?


any helo is appreciated