2nd Method

WARNING: This page is about a different car, the 2017 Hyundai Santa Fe XL and 2017 Hyundai Santa Fe. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

The 2nd method should be performed only if the 1st method fails (the misfire-related codes recur).

Start the engine and keep the engine running at idle for 2 minutes.
Drive the vehicle for over 20 minutes, keeping the engine speed above 3500rpm.
NOTE:
- If equipped with manual transaxle, shift the gear properly for keeping the engine speed above 3500rpm.
Fig 1: Engine Speed Timing Pattern
Courtesy of HYUNDAI MOTOR AMERICA