P2232 O2 Sensor Signal Circuit Shorted to Heater Circuit (Bank 1 Sensor 2): DTC Detecting Condition

DTC P2232 DETECTING CONDITION TABLE

Item	Detecting Condition	Possible Cause
DTC Strategy	Rationality check	Poor connection Short to power in signal circuit B1S2 ECM
Enable Conditions	After enough heated Battery voltage > 10.7V Catalyst temperature (model) (800°C (1472°F) Time after dew point end detected > 10 sec
Threshold Value	Counter of [Δ ushk > 2V during 0.04 sec after heater on → off] > 5 times
Diagnostic Time	2 driving cycle
Δ ushk: Sum of the signal voltage change value (B1S2) B1S1: upstream oxygen sensor/B1S2: downstream oxygen sensor