Powertrain, generic (extended)

P2764 Torque Converter Clutch Pressure Control Solenoid Control Circuit Low

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P2764 is the low counterpart of P2763: the lockup solenoid circuit is pulled toward ground. GM's 2018 T87A table defines it as 0.01 Ω or less to vehicle ground, checked while the driver is off every 6.25 ms. In 2016, the T76 six-speed sets it on a ground-short flag in 4.4 of 5 seconds after a single trip, and the T54 CVT when the hardware sees a ground short for 480 ms or longer while lockup is on. FCA's remanufactured-transmission note for the 62TE adds a twist: if P0740 or P2764 come with jerking or slipping and the solenoid tests good, the torque converter itself has failed and must be replaced. Ford's 2012 6R80 also monitors its TCC driver under this code. Lockup is usually disabled until repair.

Likely causes

Control wire shorted to ground
Solenoid winding shorted to its housing
Failed torque converter when the solenoid tests good (FCA 62TE)

Symptoms

  • No lockup and higher fuel consumption
  • Jerking or slipping (62TE)
  • MIL after one trip on some GM units

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€60–2,500
Time0.5–8 h

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

Parts involved

tcc pressure solenoidwiring harness

Related codes

P2763P2761P2762P0740P0742

References: gsi.ext.gm.com, gsi.ext.gm.com, static.nhtsa.gov, newtonnet.co.uk.