Post Catalyst Fuel System Monitor
OPERATION
| DTC(s) | Bank 1: P2096 (lean), P2097 (rich) Bank 2: P2098 (lean), P2099 (rich) |
| Monitor execution | Continuous (monitored when enable conditions are met) |
| Monitoring Duration | Not applicable |
ENABLE CONDITIONS
| Parameter | Min. | Max. |
|---|---|---|
| Engine speed | 1,200 RPM | 3,600 RPM |
| Engine load | 20 - 30% | 50 - 85% |
| Secondary fuel system status: Closed loop for accumulated time > 150 sec. | ||
| EVAP canister purge valve | No DTC (P0443, P0458, P0459) | |
| Catalyst monitor | No DTC (P0420, P0430) | |
| HO2S-2 | No DTC (P2270, P2271, P2272, P2273) | |
| HO2S-1 heater | No DTC (P0135, P0155) | |
| HO2S-2 heater | No DTC (P0141, P0161) | |
| Fuel system | No DTC (P2177, P2178, P2179, P2180, P2187, P2188, P2189, P2190) | |
TYPICAL MALFUNCTION THRESHOLDS
| P2097, P2099: |
| HO2S-2 trim integral control > 0.8 sec. |
| P2096, P2098: |
| HO2S-2 trim integral control < -0.8 sec. |