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Home >> Chevrolet >> 1999 >> Tracker 4D Utility, 4WD, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Diagnostic Tests >> DTC P0171: Fuel Trim System Lean (1.6L) >> Condition For Setting DTC

Condition For Setting DTC

Total fuel trim is greater than 43 percent in 128 firing events, short term fuel trim is equal to or greater than 20 percent in 128 firing events, and barometric pressure is greater than 75 kPa.