Unlocking the Enigma of P0170 Fuel Trim Malfunction and Beyond

P0170 and P0173 means that the system tried to go outside of the fuel trim limits. Now this can be usually caused by a bad mass airflow sensor, ... The ODBII code P0170 indicates that there is a malfunction in the fuel trim system for Bank 1, which means the engine control module (ECM) is having. It is the ecu telling us that it is having to enrich or weaken the mixture outside its preset limits - can be caused air inlet leaks, split ... Code p0170 - A Fuel Trim Malfunction DTC results from your combined LTFT and STFT exceeding threshold, indicating that your tuning for closed- ... A lot of people have had issues with these codes pointing to forgetting the secondary air pump hose on the front of the airbox. 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. P0170 is Fuel Trim Malfunction (Bank 1). Building THE GREATEST 3G to date and possibly EVER built by PharmEcis. MIVEC 6G75 Turbo 5 Speed AWD. Possible causes for fault code P0101 = ECM130A Air leakage to induction system, Dirty throttle body, Blocked crankcase ventilation or PCV nipple, Faulty MAF. What's covered: a simple check for vacuum leaks, a simple remedy, how engines actually work, and fuel injection basics on an Ecotec engine ... 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 ...