The shift lock solenoid for selector lever A stays engaged when release is commanded. Driver cannot move the selector out of Park or away from the locked gate.
Medium severity. Can I keep driving?Drive as little as possible and gently. If the transmission slips or stays in one gear, go slowly to a repair shop or call for a tow truck.
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Most likely causes
- Lock actuator mechanically stuck
- Control driver stuck on
- Carbon or debris buildup preventing free movement
What to check, in order
Start with the simplest. You can tick off each step.
Good to know
- Repair difficulty: medium
What each character of P27F4 means
- P: Powertrain: engine and transmission
- 2: Generic code: same on every make
- 7: Transmission
- F4: Specific fault in that system
Frequently asked questions
Can I keep driving with code P27F4?
Drive as little as possible and gently. If the transmission slips or stays in one gear, go slowly to a repair shop or call for a tow truck.
What causes code P27F4?
The most common causes are: lock actuator mechanically stuck; control driver stuck on; carbon or debris buildup preventing free movement.
Sources
Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.