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P0134 Diagnostic Trouble Code Discussion for October 2012

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
2001 Land Rover Discovery Series II SD 4.0L Poor Fuel Economy, MIL Lamp on, Chugging VIN: SALTL15421
P0134: No O2S activity bank 1. Both upstream O2S replaced, same codes are generated. Can't find vacuum leak if there is one. Fuse 2 ok.
October 18, 2012