P2812
Pressure Control Solenoid G Control Circuit/Open
Transmission pressure control
Generic OBD-II
Medium
What it means
P2812 means the transmission controller detected an open (or otherwise faulty) control circuit for pressure control solenoid 'G', which regulates hydraulic pressure to a clutch or shift element. With the solenoid not controlling pressure, the transmission typically shifts harshly, slips, or falls into limp mode. It's usually a wiring/connector open or a failed solenoid.
Medium
Can I keep driving? Usually, but poorly — expect harsh shifts, slipping, or limp mode; extended driving in this state can accelerate transmission wear.
Common symptoms
What you'll notice
- Check-engine light on, often with a transmission warning
- Harsh, delayed, or slipping shifts
- Transmission stuck in one gear or in limp/failsafe mode
- Reduced power or flaring between gears
Common causes
Most likely first
- Open circuit in the pressure control solenoid 'G' wiringLikely
- Failed or electrically open solenoidCommon
- Corroded or loose connector at the transmission's internal solenoid packCommon
- Damaged internal transmission harness or case connectorLess often
- Transmission control module driver fault (least likely)Less often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and scan for other solenoid or pressure codes.
- Check transmission fluid level and condition.
- Inspect the external case connector and internal solenoid-pack wiring for opens or corrosion.
- Measure the solenoid 'G' resistance and compare to spec; an open reading confirms a failed solenoid.
- Repair the open circuit or replace the solenoid/solenoid pack. Clear and re-test through all gears.
FAQ
Quick answers
Is it safe to drive with P2812?+
Short trips are usually possible, but shifting will be degraded and the transmission may be in limp mode. Prolonged driving like this can cause further wear, so fix it promptly.
Can I just clear P2812?+
An open circuit or failed solenoid will set it again immediately. The wiring or solenoid needs to be repaired.
Related codes
Often seen with P2812
Read & clear P2812 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX