General Information: DTC Detecting Condition
DTC DETECTING CONDITION CHART
| Item |
Detecting Condition |
Possible Cause |
| DTC Strategy |
- Lambda Regulation Frequency Check
|
- Leak in intake or exhaust system.
- Poor connection or damaged harness
- HO2S contamination
|
| Enable Conditions |
- 400°C < Modeled catalyst temp. < 900°C
- Lambda regulation active
- Engine speed < 3400 RPM
- 200 mg/rev < Engine Load < 700 mg/rev
- Coolant temperature > 74°C (165°F)
- 3 mph < Vehicle speed < 112 mph
- Canister purge closed
- No relevant failure
- 11V<Battery voltage
|
| Threshold Value |
- Average Ratio between measured and maximum allowed frequency during 100 Lambda regulation cycles > 0.95
|
| Diagnostic Time |
- 20 Forced stimulation cycles
|
| Mil On Condition |
|