Code result
P081F
Brake Transmission Shift Interlock (BTSI) Signal Correlation
Moderate severity
What it means
The Brake Transmission Shift Interlock prevents shifting out of Park unless the brake pedal is pressed. The TCM compares the brake-pedal input to the BTSI solenoid command and detects an inconsistency — for example shift permitted while brake not pressed, or interlock active while brake is pressed.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Stuck brake pedal switch
highOne of the most commonly reported causes for this code — check this first.
Mis-adjusted BTSI mechanism
mediumA plausible cause — test and verify before replacing parts.
Related help
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