P2812Pressure Control Solenoid G Control Circuit/Open
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- P2812 signals an open control circuit of solenoid G. GM uses it widely: on the 2016 eight-speed (TCC valve) the hardware open flag must stand for 0.3 s of 0.5 s, one trip; the 2020 table, now with the ten-speed line pressure valve as well, asks for 0.6 s of 0.65 s and rates it Type B; on the 2023 Corvette dual-clutch box it is the limited-slip valve, detected by a driver chip test with the output off and confirmed after 150 ms. GM's PIP5799 replaces the 10L valve body when normal diagnosis finds nothing. Ford's 2024 summary books the open load of the even clutch cooling valve on the TR9070 dual-clutch box as P2812. Harsh shifts or lost converter lockup follow.
- What you may notice
- Check engine light on
- Harsh shifts on line pressure designs
- No converter lockup or limited-slip function
- Likely causes
- LikelyOpen coil in solenoid G or in the valve body assembly
- PossibleOpen terminal or corroded pin in the transmission connector
- PossibleBroken wire between module and solenoid
- RareFaulty output driver in the control module
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €100 – €2,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.