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P0134 Diagnostic Trouble Code Discussion for November 2020

Heated Oxygen Sensor (Bank 1 Sensor 1) Signal Remains At Center


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Trouble Ticket Help Requests for DTC P0134
Help Request Posted
2007 GMC Sierra 1500 Classic SL 5.3L No Start, Stall VIN: 2GTEK19B07
P0134: Low O2s activity bank 1. When truck gets up over 200 degrees it will start to run poor, stall, and not restart. When not starting it will sometimes just crank and other times it will crank and kick back like out of time. When running poor it will set codes listed and show active m...
November 19, 2020