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P0155 Diagnostic Trouble Code Discussion for July 2014

Heated Oxygen Sensor (Bank 2 Sensor 1) Heater Performance


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Trouble Ticket Help Requests for DTC P0155
Help Request Posted
2007 Jeep Grand Cherokee Laredo 3.7L MIL Lamp on VIN: 1J8GR48K37
P0155: Heated Oxygen Sensor (Bank 2 Sensor 1) Heater Performance. codes are active 2 min's after starting engine. no other problems.when i jumper signal feed to signal return the voltage is 2.49 and that is normal.ground ok and heater control line produces same voltage on all sensors.both the ones with a problem and without....
July 23, 2014