DTC Information and Inspection: DTC Detecting Condition

Troubleshooting	Condition	Possible Cause
Main Action	Rationality check	Poor contact of connector Leak in intake or exhaust system O2 Sensor (Down)
Prerequisite Condition	O2 Sensor (Down) is ready to run O2 Sensor (Down) is pre-heated Battery voltage is between 11V and 16V Cumulative volume of air flow is greater than 500g after fuel cut is released
Threshold Value	Voltage of the O2 Sensor (Down) signal is greater than 0.2V
Diagnostic Time	2.5 sec
MIL	2nd driving cycles