| DTC Strategy |
- Evaluate O2 sensor heater performance
|
- Related fuse blown or missing
- Heater control circuit open or short
- Power supply circuit open or short
- Poor connection or damaged harness
- Faulty HO2S
|
| Enable Conditions |
- No relevant failure
- 11 ≤ Battery voltage ≤ 16V
- Sensor operative readiness (Tip temp. > 640°C (1, 184°F) or 18sec. heating time after Dew-point detection)
- Heater PWM > 1.56%
|
| Threshold Value |
- Front HO2S tip temp.: < 755°C (1, 391°F) or > 900°C (1, 652°F)
|
| Diagnostic Time |
- Temp. < 640°C (1, 184°F): 1sec.
- 640°C (1, 184°F) < Temp. < 755°C (1, 391°F): 10sec.
- 900°C (1, 652°F) < Temp.: 10sec.
|
| Mil On Condition |
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