I have CLK320 year 2000 and I am getting engine light. I went to Auto Advance parts store and they check engine light and it shows code P0173 Fuel trim malfunction (Bank 2) and P0170 Fuel trim malfunction (Bank 1). Please help me what that means and what parts do I have to buy and where to install. Thanks,
It also says DTC that cause frezze frame P0173