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My car is Toyota Corolla 2011. CEL lights at 75 mph.

I pulled code p02757. There no other thing wrong. The car is running satisfactory, this check lamp is the only trouble.

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1 Answer 1

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A P2757 DTC is a torque converter clutch solenoid valve issue

The valve engages a torque converter at higher speeds to lock your transmission and engine at a 1:1 ratio. This engagement, obviously, only happens at higher speeds for fuel saving.

Causes include;

  • Dirty transmission fluid
  • Faulty line pressure solenoid valve SLU
  • Line pressure solenoid valve SLU harness is open or shorted
  • Line pressure solenoid valve SLU circuit poor electrical connection
  • Torque converter clutch
  • Valve body is blocked

Link to Additional Information

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