DTC Information: DTC Detecting Condition

Item	Detecting Condition	Possible Cause
DTC Strategy	Heater current check	Poor connection Open or short to ground in power circuit Open in control circuit HO2S (S2) Corrosion
Enable Conditions	Battery voltage: 10.7V ~ 16.1V Exhaust Gas temperature: 350°C (662°F) ~ 550°C (1022 °F) IAT greater than -7.5°C (45.5°F)
Threshold Value	Internal resistance value greater than Threshold value.
Diagnostic Time	15 sec.
Mil On Condition	2 driving cycles.

* S1: upstream oxygen sensor/S2: downstream oxygen sensor