LEMON Manuals
: Even more car manuals for everyone: 1960-2025
Home
>>
Pontiac
>>
2002
>>
Firebird Base, 2D Convertible, Automatic
>>
Repair and Diagnosis
>>
Engine Performance
>>
System
>>
Engine Control System Self-Diagnostics - 3.8L
>>
Diagnostic Tests
>>
DTC P0401: EGR Insufficient Flow Detected
>>
Conditions For Setting DTC
April 5, 2026:
LEMON Manuals is launched!
Read the announcement.
Conditions For Setting DTC
The MAP changes monitored during EGR flow test indicate insufficient EGR flow.