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P0157 Diagnostic Trouble Code Discussion for November 2014

Heated Oxygen Sensor (Bank 2 Sensor 2) Circuit Low Voltage

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Trouble Ticket Help Requests for DTC P0157
Help Request Posted
2005 Chevrolet Tahoe LS 5.3L MIL Lamp on VIN: 1GNEK13T55
P0157: Heated Oxygen Sensor (Bank 2 Sensor 2) Circuit Low Voltage. ... code only. customer opted for walker aftermarket Y-pipe with 2 cats built in. Truck came back 2 weeks later with P0157 low voltage B2S2 oxygen sensor. Installed oem Delco sensor. 2 weeks later P0157 is back. Scan tool shows voltage stays low on B2S2 even a...
November 10, 2014