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Home >> Chevrolet >> 1998 >> Tracker 4D Utility, RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Diagnostic Trouble Codes >> DTC P0172: Fuel Trim System Rich >> Condition For Setting DTC

Condition For Setting DTC

Long and short term fuel trim is -22 percent or less in 128 firing events, or short term fuel trim is -11 percent or less in 128 firing events and barometric pressure is less than 75 kPa.