P2739Pressure Control Solenoid F Control Circuit High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- 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.
- What you may notice
- MIL on and limp-home mode
- Shifts missing or valve function lost
- Likely causes
- LikelyControl wire shorted to battery voltage
- PossibleShort between two solenoid lines in the harness or connector
- PossibleSolenoid F coil shorted internally
- RareTCM output stage damaged
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €80 – €1,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.