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P0140 Diagnostic Trouble Code Discussion for January 2024

Heated Oxygen Sensor (Bank 1 Sensor 2) Insufficient Activity

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Trouble Ticket Help Requests for DTC P0140
Help Request Posted
2015 GMC Terrain SLE 2.4L Negative Fuel Trims VIN: 2GKALMEK9F
P0140: HO2S Circuit Insufficient Activity Sensor 2 Sympton 00 Test Failed Warning Indicator Requested. Vehicle runs fine however the fuel trims are crazy negative. Swapped MAF with known good. Swapped Cam Solenoids and throttle body with known good. (I own my own 2015 Terrain)
January 05, 2024