What Does P2809 Mean?
Pressure control solenoid 'G' is stuck in the on position and not responding to PCM commands to turn off. This causes continuous hydraulic pressure application when it should be modulated or off.
Common Causes
40%
Mechanically stuck or failed pressure control solenoid G
30%
Shorted solenoid winding or wiring causing constant activation
15%
Debris or metal shavings jamming solenoid valve in open position
10%
PCM internal short keeping solenoid energized
5%
Valve body internal damage preventing solenoid from closing
Diagnostic Steps
1
Step 1: Disconnect solenoid G connector and observe if code returns or transmission behavior changes
2
Step 2: Measure solenoid resistance; check for short to ground or short to voltage in wiring harness
3
Step 3: Inspect solenoid connector pins for signs of overheating, melting, or corrosion
4
Step 4: Remove solenoid and manually test for free movement of internal valve; check for debris
5
Step 5: If solenoid and wiring test good, verify PCM is not providing constant voltage output using multimeter
Estimated Repair Cost
$250 - $1,500
Parts + labor, varies by vehicle and location
Pressure control solenoid 'G' is stuck in the on position and not responding to PCM commands to turn off. This causes continuous hydraulic pressure application when it should be modulated or off.
The most common cause of P2809 (Pressure Control Solenoid "G" Stuck On) is: Mechanically stuck or failed pressure control solenoid G
Typical repair costs for P2809 range from $250 to $1,500, depending on the vehicle, location, and whether you do it yourself or go to a shop.
May cause transmission to remain in one gear, experience harsh or erratic shifts, or enter limp mode. Continued operation risks internal transmission damage.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2809 to identify the root cause.
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Quick Info
Category
Powertrain
System
Transmission Hydraulic Control System
Difficulty
Type
Generic (SAE)
Recommended Tools
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