Fernando Alonso was forced back into the McLaren garage after just a single installation lap this morning, with Honda diagnosing an issue with the engine's oil system.
The problem is apparently located at the front of the V6 hybrid power unit which would require a proper dismantling of the engine in order to further investigate the issue.
"We have an oil systems issue which requires a full investigation," said a Honda spokesperson.
"We plan to run again today, but due to the difficult access location it will take several hours to resolve."
Red Bull's RB13, with Daniel Ricciardo behind the wheel, also had a troublesome debut with the car stopping out on the track after a handful a laps, halted by a benign sensor issue, and bringing the red flag.
Red Bull is expected to rejoin the session shortly however.
GALLERY: F1 drivers' wives and girlfriends
Keep up to date with all the F1 news via Facebook and Twitter
As predicted, Friday at the Red Bull Ring unfolded under clear blue skies but scorching…
Mercedes may have ended Friday at the top of the timesheets in Spielberg, but George…
The revolving door at Red Bull Racing may not have stopped spinning just yet. A…
A quick and determined Kimi Antonelli finished Friday’s second practice at the Red Bull Ring…
Full results from Free Practice 2 for the Austrian Grand Prix at the Red Bull…
Max Verstappen is laser focused on Red Bull's home Formula 1 race in Spielberg, but…