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P0141 Diagnostic Trouble Code Discussion for September 2004

Heated Oxygen Sensor (Bank 1 Sensor 2) Heater Performance

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Trouble Ticket Help Requests for DTC P0141
Help Request Posted
1999 GMC K3500 Sierra SLT 7.4L Excessive Emissions, No Start, Poor Idle Quality, MIL Lamp on VIN: 1GTHK34J7X
P0141: Heated Oxygen Sensor (Bank 1 Sensor 2) Heater Circuit Malfunction. Replaced coolant temp sensor and thermastat- tested all O2 sensors - replaced bank 2 sensor 2- run injector flow test with tech 2 - found no. 6 bad- cleaned than replaced all injectors and had fuel rail cleaned by Linder- checked removed tank cleaned- replace ...
September 27, 2004
1995 GMC Sonoma SL 4.3L MIL Lamp on VIN: 56S8512738
P0141: O2 heater circuit problem. This truck came to me with the mil on and the three codes mentioned. When I clear the codes it can take as much as 500 miles for the mil to come back on. The owner has no drivabillity complaints. Yesterday I peeled the insulation back from the main wire harnes...
September 29, 2004