Code result
P27F4
Gear Shift Lock Solenoid/Actuator A Performance/Stuck On
High severity
What it means
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?
No — stop driving
This code points to a problem that can cause damage or affect safety. Avoid driving and have the vehicle diagnosed promptly.
Most likely causes
Lock actuator mechanically stuck
highOne of the most commonly reported causes for this code — check this first.
Control driver stuck on
mediumA plausible cause — test and verify before replacing parts.
Carbon or debris buildup preventing free movement
lowLess common, but worth ruling out after the more likely causes.
Related help
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