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P0135 Diagnostic Trouble Code Discussion for October 2010

Heated Oxygen Sensor (Bank 1 Sensor 1) Heater Performance

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Trouble Ticket Help Requests for DTC P0135
Help Request Posted
2002 Jeep Grand Cherokee Laredo 4.0L MIL Lamp on VIN: 1J4GX48S92
P0135: Heated Oxygen Sensor (Bank 1 Sensor 1) Heater Circuit Malfunction. ... We can start it cold and within a couple minutes, it sets p0135. The voltage is dropping below 3 volts within 75 seconds like the test says, so its hard to understand why it keeps saying there is a problem when the voltage is where it is supposed to be. An...
October 07, 2010
2003 Jeep Liberty Sport 3.7L MIL Lamp on VIN: 1J4GL48K63
P0135: Heated Oxygen Sensor (Bank 1 Sensor 1) Heater Performance. I cleared these codes before they came back with in a week, I have a genaric scan tool and checked the values of the O2 sensors, there working properly . I also checked for exhaust leaks which I could not find. This is the only jeep in my fleet or chrysler pro...
October 25, 2010