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P0136 Diagnostic Trouble Code Discussion for December 2004

Heated Oxygen Sensor (Bank 1 Sensor 2) Circuit Malfunction

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Trouble Ticket Help Requests for DTC P0136
Help Request Posted
1999 Volvo S70 2.4L MIL Lamp on VIN: YV1LS55A3X
P0136: rear o2 sensor signal faulty. ... Keep getting code for rear O2 signal faulty. All you have to do is let the sensors come on line, goose the gas several times and P0136 sets. Alldata's diagnosis is pretty simple- check for exhaust leaks and try a new sensor. Both sensors and cat are new....
December 15, 2004
1997 Subaru Legacy LSi 2.5L MIL Lamp on VIN: 4S3BD6859V
P0136: Heated Oxygen Sensor (Bank 1 Sensor 2) Circuit Malfunction. Came in for PO136. Scan data showed Ov on sensor,replaced. MIL light came back on. Backprobed ECU found O2 Sensor voltage. Probable internal problem with ECU,replaced. Drove 20 miles ,scan data fine. Suddenly Sensor#2 dropped to Ov again. What I found was when...
December 30, 2004