Enable Conditions
| Condition | Minimum | Maximum | |
|---|---|---|---|
| Elapsed time after application of power to A/F sensor heater starts | 60 seconds | - | |
| Engine coolant temperature | 156 °F (69 °C) | - | |
| Intake air temperature | -13 °F (-25 °C) | - | |
| Engine speed | 1,500 rpm | 3,000 rpm | |
| MAP value | 1,500 rpm | 67 kPa (19.7 inHg, 500 mmHg) | 94 kPa (27.6 inHg, 700 mmHg) |
| 3,000 rpm | 60 kPa (17.8 inHg, 450 mmHg) | ||
| Vehicle speed | 33 mph (52 km/h) | - | |
| Fuel trim | 0.75 | 1.47 | |
| Fuel feedback | Closed loop at stoichiometric | ||
| Monitoring priority | P0400, P219A | ||
| No active DTCs set (prevents monitor from running) | P0101, P0102, P0103, P0107, P0108, P0112, P0113, P0117, P0118, P0134, P0135, P0171, P0172, P0201, P0202, P0203, P0204, P0300, P0301, P0302, P0303, P0304, P0335, P0339, P0351, P0352, P0400, P0401, P0404, P0443, P0496, P0497, P0522, P0523, P1109, P1157, P1172, P145C, P2195, P2227, P2228, P2229, P2238, P2252, P2413, P2648, P2649, P2A00 | ||
| Other | Without excessive load change | ||