Monitored & Set Conditions

DTC P0133 is monitored when vehicle is started and driven greater than 10 MPH with throttle open for a minimum 200 seconds, coolant temperature is greater than 158°F (70°C) and EVAP Purge is active. Test performs in idle drive. DTC P0133 is set if the oxygen sensor signal voltage is switching from below 0.33 volt to above 0.61 volt and back fewer times than required in 60 seconds. DTC is a two trip fault. DTC P0139 is monitored after starting engine, allow engine to idle. For 1st part of test, if limits are exceeded, test passes. If not, 2nd part of test runs. Engine running for greater than 295 seconds. Ambient/Temperature greater than 44°F (6.7°C), BARO greater than 22.13 in. Hg, MAP 13.8-21.6 in. Hg, RPM 1400-2500 and VSS 22-60 MPH. DTC P0139 will set if the oxygen sensor signal voltage is has not switched below 0.35 volt to above 0.53 volt in 411 seconds of engine run. DTC is a two trip fault.