OBD-II Diagnostic Trouble Code
P0139
O2 Sensor Circuit Slow Response Bank 1 Sensor 2
P
Powertrain
engine / trans
engine / trans
0
Generic
SAE standard
SAE standard
1
Fuel & air metering
39
O2 Sensor Circuit Slow Response Bank 1 Sensor 2
Severity · general guide
Moderate
Fix soon — usually won't strand you
Code type
Jeep
System
Powertrain
Model
Grand Cherokee
Years
2011