Check Engine Light due to code P0171 on Mitsubishi Lancer

Problem Description and Possible Solution

The Check Engine Light may illuminate with a stored code P0171. Our technicians tell us this can be a result of an engine vacuum leak at one or more of the fuel injector insulators. Improved insulators are available to correct this concern.

Problem Data
RepairPal Verified
Average mileage: 95,250 (94,000–96,500)
Exhaust & Emissions affected: 2.0L 4 Cylinder
4 model years affected: 2002, 2004, 2005, 2006
5 people reported this problem
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i am also having the p0171 system lean bank 1 code as well, i plug my diag. reader in clear the code and will either come back 3 days later or in ten min, i could not find a resolution so i am posting here