Code result
P27B9
Pressure Control Solenoid N Performance/Stuck Off
High severity
What it means
Pressure control solenoid N is commanded on but does not produce the expected pressure.
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
Solenoid spool stuck in closed position
highOne of the most commonly reported causes for this code — check this first.
Hydraulic feed restricted by debris
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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