FixVault
Home
›
Chrysler
›
2023
›
300 C
›
Repair and Diagnosis
›
Engine Performance
›
System
›
6.4L - DTCS P0123 To P0196
›
DTC Troubleshooting
›
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.