P2812 on Cadillac
Pressure Control Solenoid "G" Control Circuit/Open
P2812 on Cadillac vehicles indicates pressure control solenoid "g" control circuit/open. Au7o has documented this code across 2 Cadillac models — most commonly on CT5, Escalade ESV. This code means the transmission control module detected an open (broken) electrical circuit for pressure control solenoid "G". Pressure control solenoids regulate the hydraulic fluid pressure that applies the transmission's clutches and bands to produce each gear. An open circuit means the module can't properly command that solenoid, which commonly causes harsh shifting, slipping, or limp mode. It is usually an electrical or solenoid fault rather than mechanical wear. Typical repair costs on Cadillac range from $450 to $6,500, depending on the specific model and root cause.
Common Causes of P2812
- •Faulty pressure control solenoid "G"
- •Open or broken wiring in the solenoid circuit
- •Corroded or disconnected connector
- •Damaged internal transmission wiring harness
- •Low or dirty transmission fluid affecting the solenoid
- •Faulty transmission control module
P2812 on Cadillac by Model
Cadillac CT5(1 issue)
- 10L80 Harsh Shifts and Check Engine Light with DTC P2812 or P2814 (Line Pressure Solenoid)2020-2021
Owners of 2020-2021 Cadillac CT5 and CT5-V models equipped with the GM Hydra-Matic 10L80 10-speed automatic report harsh, abrupt shifts accompanied by an illuminated check engine light. GM Preliminary Information bulletin PIP5799 documents an electrical fault in Transmission Control Solenoid Valve 7 (the line pressure solenoid) that stores DTC P2812 or P2814 in the TCM. Separately, NHTSA Safety Recall N242480630 (NHTSA 25V148) covers TCM monitoring software for a related transmission control valve wear condition that, in rare cases, can cause momentary wheel lock-up. A related Special Coverage bulletin (N242480631) extends warranty for the P0747 control-valve condition to 15 years / 150,000 miles. Note: the 2020-2021 CT5 does not include the CT5-V Blackwing (introduced for MY2022 with the 10L90), which is NOT part of this recall population.
Cadillac Escalade ESV(1 issue)
- 10-Speed 10L80/10L90 Harsh Shifting, Shudder, and Valve Body Control Solenoid Issues2021-2025
Owners have reported harsh 1-2 or 2-1 shifts, delayed engagement, shudder, and transmission warning messages on the current-generation Escalade ESV. GM service information and field reports point to valve body/control solenoid faults, internal transmission control valve issues, and software calibration concerns on 10-speed units used in full-size SUVs. Some vehicles require valve body replacement, while others progress to more extensive transmission repair.
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View P2812 across all makes →Frequently Asked Questions
What does P2812 mean on Cadillac?▼
P2812 stands for "Pressure Control Solenoid "G" Control Circuit/Open." This code means the transmission control module detected an open (broken) electrical circuit for pressure control solenoid "G". Pressure control solenoids regulate the hydraulic fluid pressure that applies the transmission's clutches and bands to produce each gear. An open circuit means the module can't properly command that solenoid, which commonly causes harsh shifting, slipping, or limp mode. It is usually an electrical or solenoid fault rather than mechanical wear. On Cadillac specifically, this code is documented across 2 models.
What causes P2812 on Cadillac vehicles?▼
Common causes on Cadillac: Faulty pressure control solenoid "G", Open or broken wiring in the solenoid circuit, Corroded or disconnected connector, Damaged internal transmission wiring harness, Low or dirty transmission fluid affecting the solenoid. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P2812 on a Cadillac?▼
Repair costs on Cadillac range from $450 to $6,500, depending on the specific model and root cause.
Which Cadillac models have P2812 documented?▼
Au7o has documented P2812 on 2 Cadillac models: CT5, Escalade ESV.