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Home >> Chevrolet >> 2001 >> Camaro Base, 2D Convertible, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 7 (Engine Control System Self-Diagnostics - 5.7L) >> Diagnostic Tests >> DTC P0401: EGR System Insufficient Flow ("F" Body) >> Diagnostic Aids

Diagnostic Aids

WARNING: This page is about a different car, the 2000 Pontiac Firebird, 2000 Chevrolet Corvette, and 2000 Chevrolet Camaro. However, it is still accessible from the selected car via links, so may be relevant.

Use scan tool to clear DTC. Run EGR flow test to verify repairs. Check for vacuum restriction to MAP sensor, causing EGR flow test to fail due to insufficient MAP changes being monitored during test. Ensure engine is not running poorly. Check harness connectors and circuits for damage.

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