Drivable short-term, but fix now to avoid damage.
This code means the signal from the input or turbine speed sensor is dropping out intermittently rather than disappearing entirely. The computer uses this sensor to time gear changes, so a flickering signal can cause erratic or harsh shifting and occasional limp mode. It's most often caused by a loose or corroded connector, chafed wiring, or a failing sensor, and is usually fixable once the intermittent fault is traced.
$200 – $600
Varies by vehicle and root cause.
For short trips, usually yes, but you shouldn't rely on it. Because the signal cuts in and out, the transmission can shift harshly or briefly enter limp mode without warning, which is unpredictable and stressful on the drivetrain. Get it checked soon.
Repairs typically range from $200 to $600. A connector or wiring fix is the least expensive, while replacing the speed sensor costs more and internal reluctor ring damage requires opening the transmission, pushing the price higher. Tracing an intermittent fault adds diagnostic time.
Yes, it leans serious. The transmission depends on a steady speed signal to shift correctly, and an intermittent dropout can cause harsh shifts and surprise limp-mode events. It's wise to fix it promptly to protect the transmission.
Because the fault only appears some of the time, it may not be present when the technician is testing, which makes it harder to catch. Mechanics often wiggle-test connectors and wiring or use data logging to capture the dropout, so diagnosis can take a little longer.