Car Problem Reports

Mitsubishi Lancer Check Engine Light due to code P0171

Mitsubishi Lancer Problem
5 Reports
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Model Years Affected: 2002, 2004, 2005, 2006

Exhaust & Emissions Affected: 2.0L 4 Cylinder

Average Mileage: 95,250 mi (94,000 mi - 96,500 mi)


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.

  • Visitor, , 94,000 mi

    P0171 replaced MAF, CKECKED FUEL SYSTEM, RESET ECU, STARTS but will not RUN

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  •  Rookie

    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

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