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	Upstream O2 sensor normal heating time is higher than 1s Battery voltage at between 11V and 16V
Threshold Value	Upstream O2 sensor tip temperature is lower than 670°C (1238°F)
Diagnostic Time	20s
MIL ON Condition	2 driving cycles