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Home >> Pontiac >> 2001 >> Firebird Formula, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics - 5.7L >> Diagnostic Tests >> DTC P0480: Cooling Fan No. 1 Relay Control Circuit >> Code Enable Criteria

Code Enable Criteria

For DTC to run, the engine speed must be more than 400 RPM with ignition voltage 6-18 volts. DTC will set when improper voltage level has been detected on low speed cooling fan relay control circuit for at least 5 seconds.