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P0155 Diagnostic Trouble Code Discussion for October 2012

Heated Oxygen Sensor (Bank 2 Sensor 1) Heater Performance

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Trouble Ticket Help Requests for DTC P0155
Help Request Posted
2004 Ford F-350 Super Duty XL 5.4L MIL Lamp on VIN: 1FDSF34L24
P0155: O2 heater fault bank 2 sensor 1. Vehicle came in with three codes po135, po155, p1450 first tech installed upstream 02 sensors, codes came back . Next visit tech found identifix for possible alternator/ voltage regulator concern, observing data strean counld monitor 02 heaters being turned o...
October 03, 2012
2001 Land Rover Discovery Series II SD 4.0L Poor Fuel Economy, MIL Lamp on, Chugging VIN: SALTL15421
P0155: O2S Heater circuit bank 2 sensor 1. Both upstream O2S replaced, same codes are generated. Can't find vacuum leak if there is one. Fuse 2 ok.
October 18, 2012