LEMON Manuals
: Even more car manuals for everyone: 1960-2025
Home
>>
Buick
>>
2007
>>
Allure CXL
>>
Repair and Diagnosis
>>
Engine Performance
>>
System
>>
Engine Control System & Fuel System - 3.8L - DTC P0641 To U0107
>>
DTC P1400
>>
Circuit/System Verification
April 5, 2026:
LEMON Manuals is launched!
Read the announcement.
Circuit/System Verification
Allow the engine to cool.
Start and idle the engine for at least 2 minutes.
DTC P1400 should run and pass.