Drivable short-term, but fix now to avoid damage.
This code means shift solenoid A isn't performing correctly or appears stuck in the off position, so the transmission can't engage the gear that solenoid controls. It's often caused by a failed solenoid, but low or dirty fluid, wiring faults, or valve body issues can also trigger it. Repairs usually involve a fluid service, replacing the shift solenoid, or fixing the related electrical connection.
$200 – $800
Varies by vehicle and root cause.
A short, careful trip is usually fine, but you shouldn't keep driving long term. The transmission may not shift properly or may stay in limp mode, which puts extra strain on it. Get it diagnosed soon to prevent further wear.
A fluid and filter service may cost around $200, while replacing shift solenoid A typically runs $300 to $800 with labor. The exact price depends on whether the solenoid is easy to reach or part of a solenoid pack.
It's moderately to highly important. While it sometimes traces back to fluid or wiring, a stuck shift solenoid means the transmission isn't shifting correctly, which can wear it down over time. It's best to address it without long delays.
It means the solenoid isn't activating to engage its gear when commanded. As a result, the transmission may skip or be stuck out of that gear, causing it to start in a higher gear or behave oddly until repaired.