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Home >> Pontiac >> 2001 >> Firebird Base, 2D Convertible, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics - 3.8L >> Diagnostic Tests >> DTC P0604: Pcm Internal Malfunction >> Code Enable Criteria

Code Enable Criteria

For DTC to run, ignition switch must be ON for 5 seconds with ignition voltage more than 10 volts.