Code P066, Cruise Control Engine Rpm Too High: Notes

Code P066 will set when engine speed is greater than 4800 RPM with cruise engaged. This may occur on slippery pavement, extended wide open throttle acceleration, or for some other mechanical problems (such as transaxle slippage). Under these conditions, Code P066 will set and should be considered normal. Vehicle operator should be advised why cruise control disengaged. Clear code and road test vehicle to verify normal operation.