66F0E7 Mercedes Fault Code :
Read the description of 66F0E7 in MCM02T and the engine lights up for MCM02T - MCM Engine management (10A20) code, there are some possible causes for it.
Pressure relief valve is stuck closed
Read the description of 66F0E7 in MCM02T and the engine lights up for MCM02T - MCM Engine management (10A20) code, there are some possible causes for it.
Pressure relief valve is stuck closed