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P0155 Diagnostic Trouble Code Discussion for November 2010

Heated Oxygen Sensor (Bank 2 Sensor 1) Heater Performance


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Trouble Ticket Help Requests for DTC P0155
Help Request Posted
2000 Ford Explorer XLS 4.0L MIL Lamp on VIN: 1FMZU72X8Y
P0155: O2 Heater B2S1. Sets these trouble codes. Went thru diagnostic steps twice with same results. No shorts to power or ground. Heater resistance in all 3 sensors within range of 3-30 ohms. No opens between O2 sensor connectors and PCM connector. Voltage to heater in sensors is 1...
November 17, 2010
2004 Chevrolet S10 LS 4.3L MIL Lamp on VIN: 1GCDT13X74
P0155: Heated Oxygen Sensor (Bank 2 Sensor 1) Heater Circuit Malfunction. we verified the codes cleared and reset. went through the diag for p0135 assuming the cause might be the same for all 3 codes. the diag led us back to needing an ecm, and since we have had to replace ecm's for this problem in s-10s before it seemed reasonable....
November 29, 2010
2000 Ford Explorer XLS 4.0L MIL Lamp on VIN: 1FMZU72X8Y
P0155: O2 Heater B2S1. Sets these trouble codes. Went thru diagnostic steps twice with same results. No shorts to power or ground. Heater resistance in all 3 sensors within range of 3-30 ohms. No opens between O2 sensor connectors and PCM connector. Voltage to heater in sensors is 1...
November 17, 2010
2004 Chevrolet S10 LS 4.3L MIL Lamp on VIN: 1GCDT13X74
P0155: Heated Oxygen Sensor (Bank 2 Sensor 1) Heater Circuit Malfunction. we verified the codes cleared and reset. went through the diag for p0135 assuming the cause might be the same for all 3 codes. the diag led us back to needing an ecm, and since we have had to replace ecm's for this problem in s-10s before it seemed reasonable....
November 29, 2010