Where is the EGR valve located on the Honda Ridgeline? Answered by a verified Mechanic for Honda.How to clean and replace EGR valve. Please Subscribe and Share for more How To videos..A Honda Ridgeline EGR Valve Replacement costs between $ and $ on average. Get a free detailed estimate for a repair in your area..EGR Valve Cleaning Honda Ridgeline . hp Gas How to avoid the need to replace your EGR valve? Carbon Cleaning is the solution..