Powertrain, generic (extended)

P2739 Pressure Control Solenoid F Control Circuit High

Check engine lightOn

EmissionsRelevant

Drive cycleNot required

Limp modePossible

P2739 appears when solenoid F's control line sits too high, usually because it touches battery voltage. GM reacts faster here than for the low case: 25OBDG03A needs only 0.06 s within 0.13 s before the Type A fault is set. The Corvette dual-clutch TCM checks its clutch cooling valve with the driver on and sets P2739 above a sense threshold that rises with supply voltage, from roughly 0.7 V at a supply under 11.5 V to roughly 1.1 V beyond 15.5 V. It also runs a neighbour test at shutdown, switching each low-side output in turn; if two outputs turn out to be shorted together, the result is saved and the code appears at the next start. Ford's TR9070 uses P2739 for shorted load on the odd clutch cooling valve. A shorted coil can overload the driver.

Likely causes

Control wire shorted to battery voltage

Short between two solenoid lines in the harness or connector

Solenoid F coil shorted internally

TCM output stage damaged

Symptoms

MIL on and limp-home mode
Shifts missing or valve function lost

Repair estimate

DifficultyMediumWorkshop job

Parts and labour€80–1,500

Time0.5–5 h

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

Parts involved

pressure control solenoid fwiring harness

Related codes

P2734 P2736 P2737 P2738 P2730 P2815

References: gsi.ext.gm.com, gsi.ext.gm.com, fordservicecontent.com.