CODE P0171

2003 Mitsubishi Outlander


mitsubishi 2003 puerto rico

April, 18, 2013 AT 12:55 PM

Check engine light on then off for past 3 years, I put fuel injector cleaner to pass inspection, rough idle, problem starting after adding gasoline at times, cleaned fuel injectors, replaced oxygen sensor before catalytic, new fuel pump /filter, cleaned throttle body, EGR, tune-up done, new PCV, Checked vacuum leak negative, Dealer cannot fix problem plus other certified mechanics.
If you can solve this mystery I will gladly pay you for your advice. Moreover, you would be the only person to solve this matter


3 Answers



April, 18, 2013 AT 3:28 PM

We are at a great dis advantage as we cannot see or test the vehicle.
171 is a lean code. Possible issues are pcv, low fuel pressure, whether you replaced pump or not, map sensor, vacuum leaks or low compression.

As far as the injectors, did you have them professionally cleaned or additive? Additive never work. There is issues with the fuel rails on these loading up with debris and fouling injectors. They need to be cleaned professionally, and the rail removed and cleaned out



mitsubishi 2003 puerto rico

June, 4, 2013 AT 7:12 PM

I had fuel injectors cleaned at Jiffy Lube, does that clear out fuel rails? Car MD states wiring harness needs to be replaced where O2 sensor was changed.
Attached are the diagnostics by mitsubishi and other auto shops.


mitsubishi 2003 puerto rico

June, 5, 2013 AT 8:21 AM

I am having trouble placing a donation please explain process to me

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