My jeep is showing a code P1491.
The most common cause of this code on this vehicle is the cooling fan relay in the under the hood fuse panel. I would have a technician such as one with YourMechanic come out and test the relay and diagnose the problem further.
Have a car question? Get free advice from our top-rated mechanics.
Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%