Tuesday's move topped 157.30 despite estimates that Japan's Ministry of Finance spent about $35bn last Thursday to lift the yen roughly 3%.
Market action also pointed to smaller follow-up interventions near 157.30, but dollar buyers and yen sellers quickly rebuilt positions, blunting any sustained rebound in Japan's currency.
The renewed weakness suggests authorities' efforts are losing traction and could keep supporting global liquidity, as investors borrow yen to fund higher-yielding trades including US Big Tech.
Is Japan's intervention merely delaying the collapse of the global 'yen carry trade' time bomb?
After its $35B intervention failed, what unconventional weapons can Japan use to defend the yen?