Powertrain, generic (extended)

P2812 Pressure Control Solenoid G Control Circuit/Open

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

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.

Likely causes

Open coil in solenoid G or in the valve body assembly
Open terminal or corroded pin in the transmission connector
Broken wire between module and solenoid
Faulty output driver in the control module

Symptoms

  • Check engine light on
  • Harsh shifts on line pressure designs
  • No converter lockup or limited-slip function

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€100–2,500
Time1–6 h

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

Parts involved

pressure control solenoid gwiring harness

Related codes

P2814P2815P2813P2810P2807P0960

References: gsi.ext.gm.com, gsi.ext.gm.com, gsi.ext.gm.com, static.nhtsa.gov.