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P0138 Diagnostic Trouble Code Discussion for October 2009

Heated Oxygen Sensor (Bank 1 Sensor 2) Circuit High Voltage


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Trouble Ticket Help Requests for DTC P0138
Help Request Posted
1998 Jeep Grand Cherokee Laredo 4.0L MIL Lamp on VIN: 1J4GZ58S0W
P0138: Heated Oxygen Sensor (Bank 1 Sensor 2) Circuit High Voltage. ... shop Saturday and tried to sort out what's going on with the downstream O2 sensor (Fed emissions, only 2 sensors). Code is P0138, high voltage sensor 1-2. Sensor reading is off scale on the scan tool, and reading about 4.9 volts KOER. Disconnected the harn...
October 06, 2009
1998 Jeep Grand Cherokee Laredo 4.0L MIL Lamp on VIN: 1J4GZ58S0W
P0138: Heated Oxygen Sensor (Bank 1 Sensor 2) Circuit High Voltage. ... shop Saturday and tried to sort out what’s going on with the downstream O2 sensor (Fed emissions, only 2 sensors). Code is P0138, high voltage sensor 1-2. Sensor reading is off scale on the scan tool, and reading about 4.9 volts KOER. Disconnected the harn...
October 06, 2009