General Information: DTC Detecting Condition
DTC DETECTING CONDITION AND POSSIBLE CAUSE
| Item |
Detecting Condition |
Possible Cause |
| DTC Strategy |
- Check HO2S Signal Amplitude
|
- Leak in intake or exhaust system.
- Poor connection or damaged harness
- HO2S contamination
|
| Enable Conditions |
- Sensor tip temp > 650°C (1202°F)
- Forced stimulation active
- No lambda control limitation
- Canister saturation limited < 0.5
- 990 rpm < Engine speed < 3490 rpm
- 240 mg/rev < Engine Load < 800 mg/rev
- Coolant temperature > 74°C (165°F)
- Vehicle speed > 3 mph
- Ambient pressure > 70 kPa
- Stable driving condition
- Downstream O2 sensor pre-heating finished
- No relevant failure
- 11V<Battery voltage<16V
|
| Threshold Value |
- Integral (Lambda signal amplitude measured/Lambda signal amplitude of a slow sensor) > 1.0
|
| Diagnostic Time |
- 20 Forced stimulation cycles
|
| MIL On Condition |
|