Code PO743, flashing overdrive light

Tiny
ALAN L BUCCELLATO
  • MEMBER
  • 2002 LINCOLN NAVIGATOR
  • 5.4L
  • V8
  • 4WD
  • AUTOMATIC
  • 196,000 MILES
My overdrive light flashing. Code PO743.
Thursday, November 29th, 2018 AT 5:38 AM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,796 POSTS
Good morning,

The 743 is for the torque converter clutch solenoid. I listed the possibilities below.

This code is quite common. One of the first things I would do is to change the oil/filter in the transmission. It could be dirty fluid.

Roy

https://www.2carpros.com/articles/automatic-transmission-problems

https://www.2carpros.com/articles/how-to-service-an-automatic-transmission

P0743
Descriptor
Probable Causes
Powertrain Control Module (PCM)
Torque Converter Clutch (TCC) Solenoid
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Thursday, November 29th, 2018 AT 6:52 AM

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