P2731 code meaning
Pressure Control Solenoid F
Powertrain system Generic code P27xx codes Check engine light
What P2731 means
P2731 is the parent code for pressure control solenoid F; the standard title names the valve without the kind of fault. GM gives it a concrete job on its nine-speed (GF9) units, where valve F feeds the C6 clutch and the selectable one-way clutch. The 2020 table 20OBDG03A uses P2731 for a stuck-on check in first gear: when the releasing clutch keeps slipping less than 50 rpm for 0.25 s on a garage shift, 0.8 s on a power downshift or 0.15 s otherwise, a Type A fault is logged. GM bulletins call it solenoid valve 6 performance. PIP5556 (2018 Equinox and Traverse) blames a slow one-way clutch release and advises no repair for intermittent cases; 18-NA-097 and service update N182200080 cure stuck-in-first or hesitation complaints with new TCM software.
P2731 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor0.5 to 10 hours
- Clears after repairAfter a drive cycle
Symptoms of P2731
- Hesitation or weak acceleration from low speed
- Tie-up feel on the 1-2 shift or stuck in first gear
- MIL on, sometimes only intermittently
Common causes of P2731
- Most likelyOutdated TCM calibration (GM 9-speed, 18-NA-097, N182200080)
- PossibleSelectable one-way clutch releasing too slowly
- PossibleSolenoid F or its regulator valve sticking
- Less likelyContaminated or low transmission fluid
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Pressure control solenoid fValve body
What each part of P2731 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 7 | Area: transmission. |
| 31 | The exact fault in that area. |
What to do next
- Note P2731 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P2731
What does P2731 mean?
P2731 means "Pressure Control Solenoid F". P2731 is the parent code for pressure control solenoid F; the standard title names the valve without the kind of fault. It is a generic code, so it means the same on every make.
Is it safe to drive with P2731?
Drive gently and only to a workshop. With P2731 the car can go into limp mode (reduced power) to protect itself.
Will P2731 fail an emissions test?
Yes, it can. P2731 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P2731 to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 10 hours of work. This is a job for a workshop.
Will P2731 clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.