P066

Circuit Description

This code will set if engine speed exceeds 6350 rpm while cruise control is engaged. This may occur on slippery pavement, extended wide open throttle acceleration; or for some mechanical problems (such as transaxle slippage). Under these conditions, Code P066 will set and should be considered normal. The driver should be advised why the cruise disengaged. Clear the code and road test vehicle to verify normal operation.

Test Condition(s)

Driver not manually controlling throttle position.

Failure Condition(s)

1. Engine speed 5975 rpm or greater for 0.5 second.
2. Cruise control enabled and engaged.

Action Taken

PCM disables cruise control.