Hi guys newbie here, I've got a 2007 clk 220cdi, I've got a problem with the ecu light coming on and the car going into limp mode, I've read the code it comes back with p0088 which is fuel rail pressure to high, I took the car in for full check and diagnostics and they come back with fuel monitoring issue and was advised to change the fuel rail pressure regulator and the pump regulator, I've changed both and the pressure sensor on the rail aswell and still no change. Any ideas guys I'm stuck and don't know what to do next. Thanks in advance
