LEMON Manuals
: Even more car manuals for everyone: 1960-2025
Home
>>
Buick
>>
2004
>>
Century Base
>>
Repair and Diagnosis
>>
Engine Performance
>>
System
>>
Engine Controls (DTC P0140 To P0496)
>>
Engine Controls Diagnosis
>>
DTC P0446
>>
Conditions for Setting the DTC
April 5, 2026:
LEMON Manuals is launched!
Read the announcement.
Conditions for Setting the DTC
The FTP sensor is less than 10 inches H2O.
The condition is present for as long as 30 seconds.