Conquering P0170 A Step-by-Step Guide to Fuel Trim Malfunction Resolution

The task is to see if you have a Rich or Lean condition, since the DTC code provided is quite general and doesn't tell a whole lot. 16555/P0171/000369 - Fuel Trim; Bank 1: System Too Lean. Possible Causes: Mass Air Flow Sensor (G70) defective, Intake System Leak(s). There is a limit to how much the ECM can trim the fuel mixture and when the limit is reached for a specific amount of time the ECM will set the ... I have this code. I changed the MAF sensor because the EGR valve is working and spraying carb cleaner around the intake gasket had no effect. 2024 700 xmr, 28 hours and 160 miles, threw a p0170 code while under water and started spittin and sputtering. Backfires too. PCM & Fuel Systems - Engine Code P0170 - showArrow( 7/15/2007 6:22:50 PM ,156636,23,false)Engine Code P0170 - Fuel Trim Malfunction (Bank ... Author Topic: Fault Code P0170 (Read 4289 times). 0 Members and 1 Guest are viewing this topic. Sp4rkst4rt3r. Newbie; * ... To check fuel pressure you need to have a gauge tapped into the fuel supply. The engine bay side. Poor fuel pressure and/or a restricted fuel ... It could be the MAF or it could be a vacuum leak. The way to find out is to read live data with a scan tool that can do that. P0170 code definition Fuel Trim Malfunction (Bank 1) What the P0170 code means The P0170 code means that the powertrain control module is detecting a fuel ...