The yen's rapid and one-sided depreciation is "negative" for the Japanese economy, Bank of Japan Governor Haruhiko Kuroda said Wednesday after the currency hit a fresh 32-year low versus the U.S. dollar.

Kuroda told a parliamentary session that the rapid weakening of the yen makes business planning difficult for Japanese companies and thus the government's intervention in September was "quite appropriate."

Bank of Japan Governor Haruhiko Kuroda. (Kyodo)

"Currencies should move in a stable manner, reflecting economic and financial fundamentals," Kuroda told a session of the Budget Committee in the House of Councillors.

"The recent depreciation of the yen is rapid and one-sided. This type of yen weakness makes it difficult for companies to draw up business plans and raises uncertainty so it is negative for the economy and unfavorable," the BOJ chief said.

He also said, however, if the weakening of the yen is stable, it is a plus for the economy.

A weak yen is often welcomed by Japanese exporters as it boosts their overseas profits in yen terms. But it also inflates import costs for resource-poor Japan.

Market players see the widening interest rate gap between Japan and the United States as a cue to sell the low-yielding yen for the U.S. dollar, with the Federal Reserve expected to keep hiking rates.

In contrast, the BOJ has not budged over its stance of maintaining ultralow rates to support an economy that Kuroda has said is facing downward pressure from higher commodity prices.

"It's appropriate to maintain monetary easing to firmly support the economy and achieve our price stability target in a sustainable and stable manner, accompanied by wage growth," Kuroda said, repeating that the BOJ's policy is not designed to target foreign exchange rates.

The yen has fallen precipitously relative to the dollar, and has been recently trading in the 149 zone, surpassing the level that prompted Japanese authorities to intervene last month.

Caution about another yen-buying, dollar-selling intervention remains in the market as Finance Minister Shunichi Suzuki has kept up his verbal warnings.

"We are carefully checking foreign exchange movements more frequently," Suzuki told reporters in the morning. "We are ready to take action based on our consistent view."

Suzuki has warned of "decisive" steps against excessive volatility in the currency market. In a parliamentary session on Tuesday, he said Japan stepped into the market in September as a decisive step.

The prospect of no immediate change in the BOJ's dovish tilt has prompted analysts to say it will be difficult to reverse the current trend unless the Fed becomes less aggressive in raising rates.

Kuroda has ruled out the possibility of a rate hike "for the time being," which he initially indicated would mean two to three years.

Asked to clarify his stance in parliament, Kuroda said he had "no intention at all" of preemptively affecting policy decisions to be made after his term as BOJ chief ends next April.

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