Powertrain, generic (extended)

P2756 Torque Converter Clutch Pressure Control Solenoid

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

P2756 is the base code for the solenoid that meters apply pressure to the torque converter clutch. On its own it names only the component; in UDS-based systems a failure-type byte says what went wrong. Toyota shows this use in bulletin T-SB-0160-18 for the 2017–2018 Highlander and Sienna with the eight-speed automatic: P27567F, a stuck-off result for the lockup pressure solenoid, is one of eleven transmission codes that justify a remanufactured transaxle when a whine, harsh shifts or reduced power accompany it. The more specific siblings P2757 to P2764 split the same component into functional and electrical faults. For the driver a fault here typically means no or unstable converter lockup, higher engine speed at cruise and more heat in the fluid.

Likely causes

Internal transmission damage or debris in the valve body (Toyota 8-speed)
Lockup pressure solenoid sticking or worn
Wiring or connector fault on the solenoid circuit

Symptoms

  • Converter lockup missing or unstable
  • Higher engine speed and fuel use at steady speed
  • Whine noise or harsh shifts (Toyota 8-speed)

Repair estimate

DifficultyHardWorkshop job
Parts and labour€150–4,500
Time1–10 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

tcc pressure solenoidtorque converter

Related codes

P2757P2758P2759P0740P0741

References: static.nhtsa.gov, law.cornell.edu.