DTC P2237: O2 Sensor Pumping Current Circuit/Open (Bank 1 Sensor 1): DTC Detecting Condition

DTC DETECTING CONDITION CHART

Item	Detecting Condition	Possible Cause
DTC Strategy	Pumping current circuit open (VIP)	Poor connection or damaged harness Open in HO2S control circuit Front HO2S
Enable Conditions	Wide range sensor pump current valid
Threshold Value	Symptom detected on no activity Signal < 2.1V during fuel cut off
Diagnostic Time	Within 15 sec. after related symptom detected
Mil On Condition	2 Driving Cycles