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Home >> Chevrolet >> 2001 >> Corvette Base, 2D Convertible, Standard >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Analog Instrument Panels >> Diagnostic Tests >> DTC B0521: Tachometer Signal Circuit Malfunction >> Code Enable Criteria

Code Enable Criteria

For DTC to run, engine must be running. DTC will set when IPC detects engine speed is at least 7400 RPM for one second. When DTC is set, IPC displays engine speed at 7400 RPM.

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