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Fuel Pressure High

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

BASIC TESTING - GASOLINE (for "C" & "K" Series)
BASIC TESTING - GASOLINE (For "G" & "P" Series)