One problem related to gas recirculation valve (egr valve) has been reported for the 2007 Honda Accord. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2007 Honda Accord based on all problems reported for the 2007 Accord.
2007 Honda Accord ex v6 coupe. First failure incident came at around 88,000 miles on the car. Check engine light came on and said it was due to an oxygen sensor bank 2 sensor 1. Replaced the oxygen sensor and the code disappeared. At about 96,000 miles the same error code came on. Did some research and found that this was common amongst this model Accord and engine v6. After about 5,000 miles of driving on this code with a new oxygen sensor, the cel(check engine light) flashed. I was driving on the highway in about 70 degree weather and traveling at 65 mph. After pulling over to check the car, the spark plug and coil pack had blown completely out of cylinder number 5. . (another common issue for 2007 Honda Accord v6). Have not taken it to the dealer for repair costs, but the entire engine will now have to be replaced. There needs to be a recall out for this as it will not cause me to replace the entire engine. I will be calling Honda as well to see what they will be doing about this problem.