DTC Information: DTC Detecting Condition
| Item |
Detecting Condition |
Possible Cause |
| DTC Strategy |
- Response rate monitor (6-Pattern Monitoring).
|
- Poor connection
- Leaking or clogged intake air system
- Injector
- Fuel pressure
- HO2S upstream (S1)
|
| Enable Conditions |
- Upstream O2 sensor ceramic temperature greater than 720°C (1328° F).
- ECT greater than 40.5°C (104.9°F).
- Purge mass duration greater than 5 seconds.
- Engine load between 25 - 65%
- Catalyst temperature greater than 400°C (752°F).
- No fuel cut off.
- Fuel system status equal to Closed Loop.
- Engine speed between 1320 - 3000rpm.
|
| Threshold Value |
- Compare ratio of Expected Area to Actual Area less than 0.35.
|
| Diagnostic Time |
- 10 switches in Lambda setpoint steps (5 for Lean-Rich, 5 for Rich- Lean).
|
| Mil On Condition |
|
* S1: upstream oxygen sensor/S2: downstream oxygen sensor