Eldslaga Hobs bought before 1 January 2018 are affected - and the Swedish furniture retailer is urging customers to stop using the rapid burner in the upper-right corner of the appliance.
The recall comes after an investigation found that CO emissions were above EU limits.
Ikea is describing the recall as a "precautionary measure" and stressed there was no elevated risk of fire or explosion.
It has blamed the fault on "human error" which resulted in the wrong gas injector being installed.
Eldslaga hobs were sold in 22 European countries - and Ikea is asking anyone affected to contact its customer service team to book a home visit by a technician who can repair the fault.
A receipt is not needed and the company said it would do its "utmost" to minimise the waiting time.
"Ikea apologised for any inconvenience this may cause," a spokesman said.