Primary HO2S Heater Monitor
Operation
PRIMARY HO2S HEATER MONITOR OPERATION
| DTCs | P0031 (for bank 1) / P0051 (for bank 2), P0032 (for bank 1) / P0052 (for bank 2) / P0053 (for bank 1) / P0059 (for bank 2) |
| Monitor execution | Continuous |
| Monitoring Duration | 3 s: P0031 / P0051 / P0032 / P0052, 30s: P0053 / P0059 |
Enable conditions
PRIMARY HO2S HEATER MONITOR ENABLE CONDITIONS
| Parameter | Minimum | Maximum |
|---|---|---|
| Battery voltage | 11 V | 16 V |
| Primary HO2S heater operation time | 5 s | |
| Ignition switch | On | |
Typical malfunction thresholds
PRIMARY HO2S HEATER MONITOR TYPICAL MALFUNCTION THRESHOLDS
| P0031, P0051 |
| Heater current < 0.1 A |
| P0032, P0052 |
| Heater current > 3.8 A |
| P0053, P0059 |
| Heater current < 0.5 A or > 2.6 A |