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International Automotive Technicians Network
Re: P0171/P0174 lean
Posted to Technical Discussion Forum on 10/24/2024 2 Replies

You need to pull up "calculated load value" on scan tool data, test drive car, do full throttle accel in 1st or 2nd gear, and the value should be close to 100%. If not, pull and clean maf and do it again. If the value raises, replace maf.

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