OBD-II Diagnostic Trouble Code
P2231
O2 Sensor Signal Circuit Shorted To Heater Circuit - Bank 1 Sensor 1
P
Powertrain
engine / trans
engine / trans
2
Generic
SAE standard
SAE standard
2
Fuel & air metering (injector)
31
O2 Sensor Signal Circuit Shorted To Heater Circuit -…
Severity · general guide
Moderate
Fix soon — usually won't strand you
Code type
Jeep
System
Powertrain
Model
Grand Cherokee
Years
2011