What Does P2720 Mean?
The TCM has detected voltage in the pressure control solenoid D circuit is lower than specifications. This indicates high resistance, a short to ground, or insufficient voltage supply to the solenoid.
Common Causes
35%
Short to ground in solenoid D control circuit wiring
30%
Failed pressure control solenoid D with internal short to ground
20%
Corroded connector causing high resistance and voltage drop
10%
Low system voltage or poor battery/charging system condition
5%
Failed TCM with weak output driver circuit
Diagnostic Steps
1
Step 1: Check battery voltage and charging system operation; should be 13.5-14.5V with engine running
2
Step 2: Measure voltage at solenoid D connector with key on, engine running (should be near battery voltage)
3
Step 3: Disconnect solenoid D and check for short to ground in wiring harness (should show infinite resistance)
4
Step 4: Test solenoid D resistance; abnormally low reading indicates internal short
5
Step 5: Inspect all connectors in circuit for corrosion causing high resistance
Estimated Repair Cost
$200 - $800
Parts + labor, varies by vehicle and location
The TCM has detected voltage in the pressure control solenoid D circuit is lower than specifications. This indicates high resistance, a short to ground, or insufficient voltage supply to the solenoid.
The most common cause of P2720 (Pressure Control Solenoid "D" Control Circuit Low) is: Short to ground in solenoid D control circuit wiring
Typical repair costs for P2720 range from $200 to $800, depending on the vehicle, location, and whether you do it yourself or go to a shop.
May cause harsh shifts, delayed engagement, or limp mode. Vehicle is drivable but transmission may not shift properly or may be stuck in a safe gear.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2720 to identify the root cause.
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Quick Info
Category
Powertrain
System
Automatic Transmission
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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