It also indicates that the fuel trims reached their limit of adding fuel while trying to compensate for a actual or perceived rich condition. P0170 means there was a malfunction in the computer's control of the air:fuel ratio. In writing this article I've added Mercedes-Benz-specific info since it seems that M-B (and VW) are most prone to having this P0170 surface along with misfire codes or other fuel trim codes. P0170 Fuel Trim Malfunction (Bank 1) OBD-II Trouble Code Technical Description Article by Dale Toalston ASE Certified Technician Fuel Trim Malfunction (Bank 1) What does that mean? This code is one that surfaces with certain makes of automobiles more than others. Hi this is showing fuel trim bank 1 malfunction, this could be caused by the following things, intake leak, AIR system, fuel pressure/pump, injector/s EVAP canister purge valve, or HO2S ( air fuel mix incorrect) if it starts and runs fine, i do not think it will be fuel pump, or the injectors as this would make it run rough or even not start at all, if it was an intake leak, you would be suffering from high rev's when you start the car and would take a long time for the rev's to come down, so really, that just leaves the HO2S (sensor/s) these are located one on the exhaust manifold ( from engine follow exhaust manifold you will come to a things sticking out with some wires on) this is HO2S sensor bank 1, or if you look under the car on the exhaust, just past the catalytic converter you will see the same thing, this is HO2S sensor bank 2, it may be either of these, but i possibly would go for the first one, could be, if you have an air leak on it, the EVAP can be found under the hood/bonnet, at the front on the right hand side as you look into the engine/motor bay just in front of the screen was bottle.hope this helps SOURCE: I have an engine fault code of p0170 on a mercedes
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |