DTC Information: DTC Detecting Condition

Item	Detecting Condition	Possible Cause
DTC Strategy	Evaluate Upstream O2 Sensor Heater performance	Poor connector connection Faulty related fuse Open/Short in Power Circuit Open/Short in Heater Control Circuit Faulty Upstream O2 Sensor
Enable Conditions	Battery voltage higher than 10V and lower than 16V Upstream O2 sensor normal heating time is greater than 2s
Threshold Value	Upstream O2 sensor tip Temp. lower than 1, 391°F (755°C)
Diagnostic Time	1s
MIL ON Condition	2 driving cycles