how many km on the car?
i am a tech at a honda dealership and i see 2000 ody's every day
i bet the code is one of the following
po1456 [evap system failure] most likly cause is the gas cap missing or defective cap. 3yr/60000km
po1457 [evap tank system failure] most likely cause is the vent shut valve not opening, to a lesser extent the 2 way shut valve solinoid may not work
3yr/60000
i forget the PGM code , but it may be the EGR insufficent air flow, this a common code on all honda v6 engines around 100000km this is still covered under a silent
8yr/130000km warranty [ its the carbon build up and needs to be cleaned]