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P0155 Diagnostic Trouble Code Discussion for September 2006

Heated Oxygen Sensor (Bank 2 Sensor 1) Heater Performance

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Trouble Ticket Help Requests for DTC P0155
Help Request Posted
1996 Ford Bronco Eddie Bauer 5.8L MIL Lamp on VIN: 1FMEU15HXT
P0155: ho2s21 heater ckt. This truck came in with these three codes. We replaced one of the o2 sensors with a known good one and cleared the codes but all three come right back after two start-ups. If you look at scan data when you first start it, you will see the PCM commanding all th...
September 01, 2006