OBD-II code · Powertrain (generic, extended)
P27F4 Gear Shift Lock Solenoid/Actuator A Performance/Stuck On
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.
Is it safe to drive with P27F4?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyLock actuator mechanically stuck
- PossibleControl driver stuck on
- Less likelyCarbon or debris buildup preventing free movement
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
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–3 h
- Emissions test
- Usually unaffected
- Parts involved
- Shift Lock Solenoid A, Shift Lock Actuator A, Tcm
Related codes
- P27F1Transmission Range Control B Position Sensor/Switch Circuit Low
- P27F2Transmission Range Control B Position Sensor/Switch Circuit High
- P27F3Clutch B Temperature Too High
- P27F5Gear Shift Lock Solenoid/Actuator A Stuck Off
- P2800Transmission Range Sensor B Circuit (PRNDL Input)
- P2801Transmission Range Sensor B Circuit Range/Performance
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.