One problem related to engine cooling system has been reported for the 2006 Honda Ridgeline. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Honda Ridgeline based on all problems reported for the 2006 Ridgeline.
Honda Ridgeline 2006 air conditioning lines are located right next to an engine bracket. Over time (3yrs) the aluminum pipe wears out causing the freon to leak out of the system and the compressor to stop working. Parts # 24 & 25 had to be replaced at a cost of 400 usd. The new part seem to be made of a bendable material instead of the rigid original and can be bent out of the way of the bracket.