P0088 fuel rail system pressure too high bank in 2016 glc 250d




On second breakdown they determined fuel pump, replaced it and 80,000km later still ok.
Reverse logic maybe your fuel filter defective, allowing too much fuel through or fuel pump exceeding max flow rate ? Some guess on my part.
Good luck and let us know how you solve this please.
Where are you, UK and Australian owners better equiped to help as Diesel GLC not sold in USA, doubt Canada too.


