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International Automotive Technicians Network
Good M.A.F. but bad readings causing lean codes
Posted to the Waveform Library on 12/26/2017

Look at scan data had P0171 and P0174. Baro was also low leading me to the MAF Sensor. Verified with a scope looking for a good 4.0 Hzs or higher while full throttle snap, was very low. This is what caused the whole problem. Cleaned with maf cleaner replace se...