2004 C230 Kompressor P0170 Code
Fuel trim is rich.
LTFT 7.81%
O2 sensor around 0.45V at idle, fluctuates between 0.6V and 0.8V when driving
MAF around 2.5g/s idle in neutral, 3g/s idle in gear.
rpm 760s in neutral, 670s in gear.
Ignition TA 31%.
No appreciable power loss or rough running.
New fuel pump, fuel filter, but problem exists before those.
Any idea how to locate the problem?


