'89 240DL got codes 112, 113 221, 231 (ECU, fuel Injectors, Fuel system rich, fuel system lean) coming on, with engine light. Passes inspection with light on, been driving it awhile like this, any suggestions? Seems to run OK, lately been idling (warm) a bit rough. Thanks! Dave

 

I dunno but its a good idea to check the ground wires on the manifold are clean and tight, at the ECU end too.