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P0161 Diagnostic Trouble Code Discussion for May 2015

Heated Oxygen Sensor (Bank 2 Sensor 2) Heater Performance

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Trouble Ticket Help Requests for DTC P0161
Help Request Posted
1996 Chevrolet K1500 Cheyenne 5.7L MIL Lamp on, VIN: 1GCEK19R1T
P0161: Heated Oxygen Sensor (Bank 2 Sensor 2) Heater Circuit Malfunction. Customer's complaint was Speedometer and cruise don't work and transmission not shifting intermittently. Found that PCM data showed no VSS speed until engine warmed up, then it would start working. Scoped VSS signal and found 5 volts on VSS signal wire on star...
May 29, 2015