So I have found myself stubbornly driving a 190e 2.6 after five previous diesel benzos. When I bought the 190 it came with a check engine light on, I counted the blinks to retrieve the codes, I have code 11,16, and 29.

16 is the egr which I know how to service. But code 11 is labeled air injection system... what am i looking for to fix this code? Is there a sensor that needs replaced? I am just as confused about code 29, which is labeled difference in coolant temperature between CIS-E and EZL... again what kind of repair does this refer to?

thanks