Monitored & Set Conditions
DTC P0134 - Oxygen sensor monitor will run after engine has been running for greater than 121 seconds, in closed loop fuel control mode with engine coolant temperature greater than 150.8°F (66°C). DTC will set if O2 sensor voltage is 0.35-0.58 volt for 30 seconds and then O2 signal volt is 1.5 volts for 60 seconds. This is a one-trip fault.
DTC P0140 - Oxygen sensor monitor will run after engine has been running for greater than 121 seconds, in closed loop fuel control mode with engine coolant temperature greater than 150.8°F (66°C). Vehicle speed greater then 40 MPH. DTC will set if O2 sensor voltage is 0.35-0.58 volt for 30 seconds, and then O2 signal volt is 1.5 volts for 60 seconds. This is a two-trip fault.