Monitored & Set Conditions

DTC P0133: 1/1 O2 SENSOR SLOW RESPONSE  - Start and drive vehicle greater than 10 MPH with throttle open for a minimum 200 seconds. Coolant greater than 158°F (70°C). EVAP purge is active. Test performs in idle drive. DTC will set when 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. This is a two trip fault.

DTC P0139: 1/2 O2 SENSOR SLOW RESPONSE  - Start 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, amb/batt temp greater than 44°F, Baro greater than 22.13 in. Hg., MAP 13.8-21.6 in. Hg, RPM 1400-2500 (4-cylinder); RPM 1120-1950 (6 cylinder) and VSS 22-60 MPH. DTC will set when the oxygen sensor signal voltage has not switched below 0.35 volt to above 0.53 volt in 411 seconds of engine run. This is a two trip fault.