Unveiling P0170 Fuel Trim Malfunction and Its Impact on Vehicle Performance

The engine code seems to relate to a plausability failure. There are several subtypes listed in the manual, but they all relate to exhaust leak ... My 97 lude is throwing P0172 that reads "System running rich" and P0170 reads"fuel trim malfuntion". What does those codes mean? How can i fix it? 16554 P0170 035 Fuel Trin, Bank 1 Malfunction Possible causes: Air leaks - Map, TB gaskets?? Lambada - Clean or Replace any other possibilities? P0170 indicates a fuel trim malfunction in Bank 1 of the engine. This means the engine control module (ECM) is having difficulty maintaining the ... That is a fuel trim error, not just related to MAF, but vacuum leaks, bad O2 sensor, Oil contamination in MAF connector or O2 sensor connectors. Usual suspects... Air leakage to induction system, Dirty throttle body, Blocked crankcase ventilation or PCV nipple, Faulty MAF. the code mean there's a vacuum leak. engine oil leak if bad enough will cause low vacuum and cause a leak code as well. hi. I have just joined the club and I need to no how to fix a error code p0170 fuel trim bank 1 problem . I have change the 2 lamba sensors ... 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 ... The code means the fuel trim has reached it's adaption limits (-30/+50% according to the info above). The first step to diagnosing the problem ...