Secondary HO2S Heater Monitor
Operation
SECONDARY HO2S HEATER MONITOR OPERATION
| DTCs | P0037 (for bank 1) / P0057 (for bank 2), P0038 (for bank 1) / P0058 (for bank 2) / P0054 (for bank 1) / P0060 (for bank 2) |
| Monitor execution | Continuous |
| Monitoring Duration | 3 s: P0037 / P0057 / P0038 / P0058, 30 s: P0054 / P0060 |
Enable conditions
SECONDARY 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
SECONDARY HO2S HEATER MONITOR TYPICAL MALFUNCTION THRESHOLDS
| P0037, P0057 |
| Heater current < 0.1 A |
| P0038, P0058 |
| Heater current > 1.7 A |
| P0054, P0060 |
| Heater current < 0.2 A or > 1.2 A |