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Home >> Cadillac >> 1995 >> Eldorado Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Diagnostic Parameters >> Pcm Specific Data Codes >> PD42: Octane Level Of Fuel
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PD42: Octane Level Of Fuel

Display shows octane level of fuel based on recent knock sensor activity. This parameter will only display zero, 87, 90 or 93 indicating fuel octane calculated by PCM. A parameter value of zero indicates that PCM has not enough time to calculate the octane level. Display will always read zero for vehicles equipped with 4.6L (VIN Y) engine.

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