DTC P0031 Ho2S Heater Circuit Low (Bank 1/Sensor 1): DTC Detecting Condition

DTC P0031 DETECTING CONDITION TABLE

Item	Detecting Condition	Possible Cause
DTC Strategy	Electrical Check	Related fuse blown or missing Open or short to ground in power supply or control harness Poor connection or damaged harness Faulty HO2S
Enable Conditions	10V < Battery voltage < 16V 1.2% < Heater power < 99%
Threshold Value	Short to ground
Diagnostic Time	10sec.
MIL On Condition	2 Driving Cycles