Transmission problem code P1723

2004 HYUNDAI SONATA
269,375 MILES • 2.7L • 6 CYL • 2WD • AUTOMATIC
Avatar
LLEWJOHN
  • MEMBER
  • 1 POST
I have run an OBD II check and came up with code P1723 ( transmission control relay).
Also, the car while in fourth gear under normal acceleration will jump into second gear and then to third gear and then back to fourth gear. It is extremely difficult to increase speed because of the gear jumping downwards.
Jan 22, 2018 at 12:51 AM
Advertisement
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
Avatar
MHPAUTOS
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 31,937 POSTS
The control relay may have a dirty connection. you can clean the contacts of the plug with terminal contact cleaner. if this does not help the control relay is probably the issue here.
Jan 22, 2018 at 1:55 AM