Mercedes 2002 270CDI. Automatic
I took into the garage today and after several test He changed Air Mass Meter.
He said to ignore error code for heater booster as they are common fault and no action is needed
air mass value was 0
on/off ratio of component y31/1(egr value was 3%
this was the test result of exhaust gas re-circulation
i will let you know of the progress
what is your openion
will this work.