Defeating P0170 A Comprehensive Guide to Fuel Trim Problems

First thing to check for is vacuum leaks posted MAF. P0170 indicates a lean condition with unmeasured air. Second would be fuel. A code P0170 means that the PCM is either subtracting too much fuel and making the mixture too lean, or it's adding too much fuel to make the mixture too rich. Codes P0170 through P0175 are caused by either unmetered air entering the engine or excess fuel entering the combustion chamber, though it could ... The fault code P0170 can be caused by parts like the fuel filter, fuel pressure regulator or the air mass meter. The adaptive values in the ECU are adjusted so ... 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. Inconsistent lean condition help P0133 & P0170 · A faulty O2 Sensor · A leaking exhaust manifold · An engine vacuum leak · An open or short in ... 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.. what car is this on? a gas cap or a fuel pump o-ring problem would kick a evap leak if it was an obd2 car, a po170 is a fuel trim problem, which ... The error code is P0170, and the error reason is: Multiplicative Mix Correction bank1. Does anyone know what is it? and what should I get fixed/replaced? Running rich ... But not really p0170 and p0172 · 1) Fuel pressure too high · 2) O2 sensor stuck rich (above 450mV) It should cycle between 100 ...