LEMON Manuals
: Even more car manuals for everyone: 1960-2025
Home
>>
Fiat
>>
2021
>>
500X Pop
>>
Repair and Diagnosis (Single Page)
>>
Engine Performance
>>
System
>>
1.3L - DTCS P0121 To P02EE
>>
DTC Troubleshooting
>>
P0140-O2 Sensor 1/2 Signal Inactive
>>
Set Condition
April 5, 2026:
LEMON Manuals is launched!
Read the announcement.
Set Condition
The Powertrain Control Module (PCM) detects that the Oxygen Sensor 1/2 signal switches from lean to rich less than 16 times within 20 seconds during monitoring.