P0170 Fuel Trim Malfunction Symptoms, Causes, and Solutions

2018 Turbo S service code p0170 . ... Had bad fuel . Cleaned and flushed tank and lines, now check engine lamp on with service code p0170 that ... Pull the vac line off the fuel pressure regulator and see if any gas drips out ... this means a bad regulator and will cause trim code.. It could be a false code, or it could be one of a fairly large list including a bad PCM/ECM. Anyone have this happen? Some 2015-2016 f-super duty vehicles equipped with a 6.7l diesel engine may exhibit an illuminated MIL with DTC P0170 (fuel trim bank 1) stored in the ... A fuel trim malfunction indicates that the FI system cannot fully compensate for either a rich or lean condition. The P0170 is defined as “fuel trim malfunction, bank1.” This is a DTC (diagnostic trouble code) that is triggered when the fuel trim in cylinder ... 'P0170' Fuel Trim Malfunction Bank 1 Legacy Forum. Generally this looks like a Fuel Trim Malfunction for Bank 1. It looks like this indicates I'm likely running too lean or too rich, but does not ... a code p0170 is a fuel trim malfuction, this could be caused by the fuel running to rich. were both 02's replaced or just one? The car seems to rev a lot higher than normal. It shifts around 4000rpms and 1st gear sometimes takes it to 20, 2nd to 40,and rest of gears happen fast.