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Home >> Cadillac >> 1995 >> Eldorado Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Pcm Code Charts >> Code P066, Engine Rpm Too High With Cruise Engaged >> Failure Conditions
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Failure Conditions

Engine at 5975 RPM or greater for 0.5 second with cruise control on and engaged. This may occur on slippery road conditions, extended wide open throttle acceleration or for some mechanical problems, such as transaxle slippage. Under these conditions Code P066 will set. This should be considered normal for cruise control to disengage. Clear code and road test vehicle to verify normal operation.