DTC Information: DTC Detecting Condition

Item	Detecting Condition	Possible Cause
DTC Strategy	Calibration resistance circuit (Vrc) open	Poor connector connection Open to HO2S trim resistor circuit Upstream HO2S
Enable Conditions	Battery voltage is between 9 and 16V Heating duration greater than 70s
Threshold Value	Trim resistor (Vrc) circuit resistance is higher than 4644Ω or the voltage between Vip and virtual ground (Vg) is less than 1.2V and the voltage between reference voltage circuit (Vn) and Vg is higher than 1.2V
Diagnostic Time	Continuously
MIL ON Condition	2 driving cycle