Drivable short-term, but fix now to avoid damage.
This code means the transmission control module detected a problem with the brake switch signal in its electrical circuit. The transmission uses this brake input to manage shifting, the torque converter lock-up, and cruise control, so a faulty signal can confuse it. Typical fixes range from replacing a worn brake light switch to repairing damaged wiring or connectors in the circuit.
$100 – $400
Varies by vehicle and root cause.
For short trips, usually yes, but you shouldn't rely on it. Because this code affects shifting and the torque converter, prolonged driving could stress the transmission. Have it diagnosed soon, especially if shifting feels off.
If it's just a brake light switch, repairs often run $100 to $200. Wiring repairs or a control module issue can push the total toward $400 or more, depending on your vehicle.
It can be. While it sometimes traces back to a simple brake switch, it directly affects how your transmission shifts and can trigger limp mode. It's worth addressing promptly to avoid bigger problems.
Modern transmissions use the brake signal to decide when to unlock the torque converter and manage smooth shifts. A bad brake switch sends mixed signals, which the transmission interprets as a fault.