P0037 O2 Sensor Heater Circuit low (Bank 1/Sensor 2): DTC Detecting Condition

Item	Detecting Condition	Possible Cause
DTC Strategy	Check short circuit to ground on front HO2S heater line	Related fuse blown or missing Open or short to ground in power supply or control harness Contact resistance in connectors Faulty HO2S
Enable Conditions	Battery voltage > 10V 1 % < Heater power < 99%
Threshold Value	Short to ground
Diagnostic Time	10 sec.
Fail-Safe	Heater open loop control
Mil On Condition	2 Driving Cycles