Powertrain, generic (extended)

P2759 Torque Converter Clutch Pressure Control Solenoid Control Circuit Electrical

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modeNo

P2759 is a general electrical fault on the control circuit of the converter clutch pressure solenoid, used where a module cannot distinguish an open from a ground or supply short. No manufacturer documents P2759 publicly. The principle is visible in Ford's 2012 summary: the TCC output is pulse-width driven and a feedback line from the driver reveals opens and shorts, while makers such as GM report each case separately under P2761, P2763 and P2764. CARB requires this circuit check for transmission outputs. A meter test of coil resistance and of each wire to ground and to battery usually narrows it down quickly. Until repaired, many controllers inhibit lockup, so cruise rpm and fluid temperature rise slightly.

Likely causes

Damaged wire or connector between TCM and solenoid
Solenoid coil open or shorted
Faulty TCM output driver

Symptoms

  • No converter lockup
  • Slightly higher fuel consumption
  • Warning lamp on

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€60–900
Time0.5–4 h

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

Parts involved

tcc pressure solenoidwiring harness

Related codes

P2761P2763P2764P2760P0740

References: law.cornell.edu, newtonnet.co.uk.