What Does P2708 Mean?
Shift solenoid 'F' is stuck in the on (energized) position and not responding to TCM commands to turn off. This causes incorrect hydraulic pressure routing and can result in wrong gear selection, harsh shifts, or transmission limp mode operation.
Common Causes
40%
Shift solenoid F mechanically stuck on due to contamination, varnish, or internal spring failure
25%
Shorted solenoid winding or short to power in wiring harness causing constant energization
20%
Dirty transmission fluid with debris jamming solenoid valve in open position
10%
Transmission control module internal fault providing continuous ground or power
5%
Valve body damage or bore wear preventing solenoid plunger from returning to rest position
Diagnostic Steps
1
Step 1: Inspect wiring harness to solenoid F for chafing, damaged insulation, or shorts to power
2
Step 2: Disconnect solenoid F and measure resistance; check for short to ground or short to power
3
Step 3: Use scan tool to command solenoid F off and monitor voltage at solenoid connector terminal
4
Step 4: Verify TCM is not providing continuous ground or power signal when solenoid should be off
5
Step 5: Remove solenoid F and test for mechanical binding; clean or replace as needed and inspect valve body bore
Estimated Repair Cost
$200 - $1,200
Parts + labor, varies by vehicle and location
Shift solenoid 'F' is stuck in the on (energized) position and not responding to TCM commands to turn off. This causes incorrect hydraulic pressure routing and can result in wrong gear selection, harsh shifts, or transmission limp mode operation.
The most common cause of P2708 (Shift Solenoid F Stuck On) is: Shift solenoid F mechanically stuck on due to contamination, varnish, or internal spring failure
Typical repair costs for P2708 range from $200 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Transmission will likely enter limp mode with limited gears or experience incorrect gear selection and harsh shifting. Vehicle may have reduced power delivery and unpredictable transmission behavior creating unsafe driving conditions.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2708 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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