| DTC Strategy |
- Determines O2 sensor functionality by checking its response rate
|
- Poor Connection
- Faulty HO2S
- Faulty PCM
|
| Enable Conditions |
- 1200 ≤ Engine RPM ≤ 4300
- 40g/s ≤ Air Flow ≤ 7.5g/s
- Engine run time > 60sec
- Engine Coolant > 70°C ( 158°F)
- No DFCO (Decel Fuel Cut-Off) Exit with Rich Bias Fueling
- No TORQ Fuel Reduction in effect
- No Disabling Faults
- All of the conditions above met for more than 2sec
|
| Threshold value |
- Switching counter lean to rich < 13
- Switching counter rich to lean < 13
- Response Lean Rich Transition Counter/Response Lean Rich Switch Counter > 29
- Response Rich Lean Transition Counter/Response
- Rich Lean Switch Counter > 35
- Response Rich Lean Average/Response Lean Rich Average < 0.3809
- Response Rich Lean Average/Response Lean Rich Average > 3
|
| Diagnosis Time |
|
| MIL On Condition |
|