Heikki Kovalainen will return to Formula 1 testing at Barcelona on Friday.
The Finn was due to undertake driving duties on Thursday, but fell ill with food poisoning following a trip to a sponsor event in Finland. Caterham instead called up his team-mate Vitaly Petrov to drive at short notice.
Kovalainen admitted he was feeling much better by the afternoon and wrote on Twiter: "Stomach feeling better, only some temperature now hopefully fighting the bug off."
A Caterham spokesman confirmed to AUTOSPORT that Kovalainen would return to driving duties on Friday and Saturday before handing the car back to Petrov.