More than 50 Euro owners have reported the combustion problem, which Honda Australia describes as a 'post-combustion detonation sound'.
Honda brought an engineering team from Japan to study and resolve the problem, which was also reported in a handful of cars in the USA.
It only affects the Euro with 2.4-litre four-cylinder engine.
"A counter measure has been developed. We will receive it at the end of this month and will be contacting customers to recify their vehicles," says Honda Australia's spokesman, Mark Higgins.
"It's a handful of cars. We've sold 9000 or 10,000 Euros in the past year and it's around 60 vehicles maximum."
He says Honda is taking the problem very seriously.
"Honda R&D people came out from Japan. We had a team of engineers here for about two weeks," he says.
Higgins is not aware of the specific changes to solve the problem but believes it is an electronic counter-measure.
"We're not sure if it's a specification specific. We don't know what the issue is, as yet," he says.
"But the good news is that we had an issue, and there is a counter- measure. It's an electronic or ECU issue, not a mechanical issue.
"The other thing to remember ... is that this is doing no harm whatsoever to the engine. We guarantee the engine will have no ill effects. It has also had no effect on performance or the fuel economy."