LEMON Manuals
: Even more car manuals for everyone: 1960-2025
Home
>>
Buick
>>
2009
>>
Allure Super
>>
Repair and Diagnosis
>>
Engine Performance
>>
System
>>
Engine Control System & Fuel System - 5.3L - DTC P0016 To DTC P0358
>>
DTC P0068 or P0121
>>
DTC Descriptors
April 5, 2026:
LEMON Manuals is launched!
Read the announcement.
DTC Descriptors
DTC P0068
Throttle Body Airflow Performance
DTC P0121
Throttle Position (TP) Sensor 1 Performance