P2809 code meaning
Pressure Control Solenoid G Stuck On
Powertrain system Generic code P28xx codes Check engine light
What P2809 means
P2809 is the reverse case: valve G keeps acting although it should have released. On GM's 2016 eight-speed automatics, where G operates the converter lockup clutch, the converter shows almost no slip, between minus 50 and plus 30 rpm, while the clutch is commanded off; after 1.5 s and six fail counts the controller stores the code, with the MIL lit in the first trip. GM's 2023 Corvette dual-clutch table uses the same code when the differential lock valve stays hydraulically engaged, found during a recovery routine and logged as Type B. A converter clutch that does not release can stall the engine when stopping or make the car shudder at low speed. Contaminated fluid and a sticking valve are the leading suspects.
P2809 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor1.5 to 10 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2809
- Engine stalls or shudders when coming to a stop
- MIL on
- Differential stays locked on Corvette, tire scrub in tight turns
Common causes of P2809
- Most likelyValve G held open by debris
- PossibleContaminated or degraded transmission fluid
- Less likelyMechanical fault inside solenoid G
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Pressure control solenoid gValve body
What each part of P2809 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 8 | Area: transmission. |
| 09 | The exact fault in that area. |
What to do next
- Note P2809 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 P2809
What does P2809 mean?
P2809 means "Pressure Control Solenoid G Stuck On". P2809 is the reverse case: valve G keeps acting although it should have released. It is a generic code, so it means the same on every make.
Is it safe to drive with P2809?
Drive gently and only to a workshop. With P2809 the car can go into limp mode (reduced power) to protect itself.
Will P2809 fail an emissions test?
Yes, it can. P2809 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 P2809 to fix?
Difficulty: workshop only. A typical repair takes 1.5 to 10 hours of work. This is a job for a workshop.
Will P2809 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.