FixVault
Home
›
Dodge and Ram
›
2025
›
Durango GT Plus
›
Repair and Diagnosis
›
Engine Performance
›
System
›
3.6L - DTCS P0133 To P0155
›
Diagnosis And Testing
›
P0139 O2 Sensor 1/2 Slow Response
›
Set Condition
Set Condition
If the PCM does not detect a rich to lean switch within a specific time during a decel fuel shutoff event, the monitor will fail.