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P0141 Diagnostic Trouble Code Discussion for March 2013

Heated Oxygen Sensor (Bank 1 Sensor 2) Heater Performance

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Trouble Ticket Help Requests for DTC P0141
Help Request Posted
1998 GMC K3500 Sierra SL 7.4L Poor Idle Quality, Cuts out, Misfire VIN: 1GDHK33J1W
P0141: Heated Oxygen Sensor (Bank 1 Sensor 2) Heater Circuit Malfunction. This vehicle is from one of my car lot accounts. Came to us with very rough idle, very low on power. Found #4 injector to be incorrect injector,replaced it along with a new fuel rail(hold down clips broken)still multiple misfires intermittently, always #4, and...
March 07, 2013