Monitored & Set Conditions

DTC P0133 is monitored with engine running and when vehicle is driven more than 10 MPH with wide open throttle or just open for a minimum 200 seconds, coolant more than 158°F (70°C), and EVAP purge is active. Test performs in idle drive.

DTC P0133 will set when O2 sensor signal voltage is switching from less than 0.33 volt to more than 0.61 volt and back fewer times than required in 60 seconds. This is a 2-trip fault. See TRIP INDICATOR  under ON-BOARD DIAGNOSTICS under SELF-DIAGNOSTIC SYSTEM.

DTC P0139 is monitored with engine idling. For first part of test, if limits are exceeded, test passes. If test does not pass, second part of test runs with engine running for more than 295 seconds, ambient/battery temperature more than 44°F (7°C), barometric pressure more than 22.13 in. Hg, MAP sensor vacuum 13.8-21.6 in. Hg at 1400-2500 RPM and vehicle speed 22-60 MPH.

DTC P0139 will set when O2 signal voltage does not switch from less than 0.39 volt to more than 0.53 volt in 411 seconds of engine run time. This is a 2-trip fault. See TRIP INDICATOR  under ON-BOARD DIAGNOSTICS under SELF-DIAGNOSTIC SYSTEM.