I have a 2012 XC60 D4.
Recently the ‘Engine System Service Required’ has appeared in the dash. I’ve had it serviced and the Mass Airflow Sensor replaced. Message still appears.
Taken it to a vehicle electrician for diagnostics and everytime the fault is cleared it reappeared when the ignition is switched on. MAFS unplugged and swapped, still the same. When unplugged it gave the same readout as when it was plugged in.
VE was stumped and recommended further investigation.
Has anyone come across this fault and can recommend a suitable fix?
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