Fuel Trim Malfunction (P0170) A Comprehensive Diagnostic Guide

Motorbike Professor ... More likely happened each time you started it (cold) after the exhaust gaskets were blown, not during the long ride. Not a ... P0170 indicates a malfunction in the computer's control of the air:fuel ratio. It also indicates that the fuel trims have reached their limit in adding fuel. It reads like the engine is overfuelling, how old is the car ? it's recommended to replace the oxygen (lambda) sensors every ten years or so. The p0170 code refers purely to the fuel mixture (air/fuel ratio) but without stating which way it's going. p0171 is mixture to lean and P0172 is too rich. The most common problem associated with this code is the MAF sensor or air mass meter. This is especially the case with Mercedes-Benz and Volkswagen and other ... You are running outside optimal fuel trim. There is a probably an air leak somewhere in your intake system (MAF, vacuum leak, o2 sensor not ... 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 ... What's covered: a simple check for vacuum leaks, a simple remedy, how engines actually work, and fuel injection basics on an Ecotec engine ... It sounds like you might have an exhaust leak. This causes the O2 sensor to think you have a lean run condition and fattens up the fuel mixture which causes a ... DTC Code P0170 indicates a Fuel Trim Malfunction, where the Engine Control Module (ECM) detects an imbalance in the air-fuel mixture. Symptoms for Fault Code ...