General Information: DTC Detecting Condition

DTC DETECTING CONDITION CHART

Item	Detecting Condition	Possible Cause
DTC Strategy	Heater current check	Poor connection Open or short to ground in signal circuit B1S2 ECM
Enable Conditions	Catalyst temperature (model) 200~550°C (392~1022°F) Intake air temperature > -7°C (19.4°F) Battery voltage 10.7~16.1V
Threshold Value	Internal resistance > threshold f (cat. temp., heater power)
Diagnostic Time	Above 6 sec
MIL ON Condition	2 driving cycle

* B1S2 : upstream oxygen sensor/B1S2 : downstream oxygen sensor