Drivable short-term, but fix now to avoid damage.
This code means shift solenoid A appears stuck in the on position, so it stays engaged even when the computer commands it off, keeping the transmission from shifting normally. It's often caused by a failed solenoid, but contaminated fluid, wiring shorts, or valve body sticking can also be responsible. Repairs typically involve a fluid service, replacing the shift solenoid, or addressing electrical and valve body faults.
$200 – $850
Varies by vehicle and root cause.
A short, careful trip is usually okay, but you shouldn't keep driving on it. The transmission may be stuck in or skipping gears and could be in limp mode, which adds strain. Get it diagnosed soon to avoid further wear.
A fluid service may cost around $200, while replacing shift solenoid A typically runs $300 to $850 with labor. The price depends on whether the solenoid is easy to access or part of a larger solenoid assembly.
It's important to address. A solenoid stuck on prevents normal shifting and can leave the transmission in the wrong gear, which strains it over time. While sometimes fixable with simple repairs, it shouldn't be left unattended for long.
It means the solenoid stays activated even when it's supposed to turn off, so its gear circuit remains engaged. This can trap the transmission in or out of a gear, causing harsh shifts or a limp-mode condition until it's repaired.