Drivable short-term, but fix now to avoid damage.
This code means the transmission control module detects that shift solenoid B is stuck in the on (activated) position, so it keeps directing fluid even when it shouldn't, disrupting normal shifting. It's commonly caused by debris from contaminated fluid jamming the solenoid, a failed solenoid, or an electrical fault keeping it energized. Repairs usually involve a fluid service, replacing the solenoid, and inspecting the circuit and valve body.
$150 – $650
Varies by vehicle and root cause.
Short distances are usually possible, but it's risky. The transmission may be locked in the wrong gear or in limp mode, and continued driving can damage it further. Get it checked soon.
Repairs typically range from $150 to $650. A fluid service with solenoid replacement is common, while valve body cleaning or electrical repairs can raise the price.
Yes. A solenoid stuck on can force the transmission into the wrong gear and, if left alone, cause significant internal wear, so it's best addressed quickly.
Most often it's contaminated transmission fluid leaving debris that jams the solenoid open, though a worn solenoid or an electrical fault that keeps it powered can do the same.