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Home >> Chevrolet >> 1990 >> Corvette Base, 2D Convertible, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Diagnostic Tests >> Code 45, Rich Exhaust Indication >> Fuel Pressure High

Fuel Pressure High

If fuel pressure is too high, air/fuel ratios will be rich. For fuel pressure checking procedure, see BASIC TESTING article in this section. The control module can compensate for slight increases but if air/fuel ratio becomes too rich a Code 45 will set.

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