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Home › Buick › 2001 › Century Custom › Repair and Diagnosis › Engine Performance › System › Engine Controls Self-Diagnostics - 3.1L & 3.4L › Inspection/Maintenance Procedures › Inspection/Maintenance Exhaust Gas RECIRCULATION System Set Procedure › Enable Criteria

Enable Criteria

Barometric Pressure (BARO) is more than 65 kPa.
Engine Coolant Temperature (ECT) is 176-230°F (80-110°C).
Intake Air Temperature (IAT) is less than 149°F (65°C).