| DTC Strategy |
- Check catalyst oxygen storage capacity by evaluating downstream O2 sensor fluctuations
|
- Exhaust gas leaks
- Faulty rear HO2S
- Faulty three way catalyst converter
|
| Enable Conditions |
- Coolant temperature >68°C (154°F)
- 837°F < Modeled catalyst temp < 1700°F
- Vehicle speed >25mph
- 1200< Engine speed <3300
- 0.22g/rev.< Mass air flow <0.9g/rev.
- Ambient pressure >70kPa (700hPa)
- Canister load <0.5
- Lambda control active & Stable driving condition
- Downstream O2 sensor operative readiness
- No opening/closing of Canister Purge Valve
- 11V < Battery voltage < 16V
|
| Threshold Value |
- Average malfunction index > 1
|
| Diagnostic Time |
- 50 Lambda Controller Cycles
|
| MIL On Condition |
|