When your vehicle has a P2708 DTC, it means one of the shift solenoids has gotten stuck in the On position. This can be caused by poor maintenance, or a serious internal problem. But either way, this is one of the more serious transmission problems and it can lead to drivability and performance issues.
How Serious is the Code?
If your vehicle has stored a P2708 diagnostic trouble code, the computer has detected one of the shift solenoids is not responding and is likely stuck in the On position. This means a number of transmission problems will ensue, like slipping, delayed shifts, and even engine stalling.
Symptoms of a P2708 include:
- Hard shifts
- Delayed shifts
- Transmission overheating
- Poor performance
- Limp mode
- Low transmission fluid
- Dirty transmission fluid/filter
- Damaged wiring/connectors
- Blocked channels inside the valve body
- Failed shift solenoid
- Programming issues with the ECU/TCM
How to Diagnose the Code?
The first thing that should be done when trying to diagnose a P2708 OBDII diagnostic trouble code, is look at the condition and level of transmission fluid. If it’s clean and at the proper level, then the wiring and connectors on the transmission wiring harness need to be inspected for signs of damage and corrosion. Should no issues be found, and there are no manufacturer TSBs related into the problem, then further tests will need to be performed on the solenoids and valve body.
What Repairs Will Fix P2708?
- Change the transmission fluid/filter
- Repair any damaged wiring/connectors
- Update TCM programming
- Replace shift solenoid
P2706 – Shift Solenoid F
P2707 – Shift Solenoid F Electrical Perf or Stuck Off
P2709 – Shift Solenoid F
P2710 – Shift Solenoid F Intermittent