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P0155 Diagnostic Trouble Code Discussion for August 2013

Heated Oxygen Sensor (Bank 2 Sensor 1) Heater Performance

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Trouble Ticket Help Requests for DTC P0155
Help Request Posted
1998 Ford F-150 XL 4.2L MIL Lamp on VIN: 1FTZF1722W
P0155: o2 heater circiut fault. ... wires crossed and dpfe not seated all the way in. Fixed those concerns, now it still has p0155 and p0135. Cleared codes, they come right back. Inspected wiring, no pinched or questionalbe wiring, unplugged both sensors,codes still return. Checked all fuses...
August 08, 2013