P0777 — Shift Solenoid E Electrical
Drivable short-term, but fix now to avoid damage.
What P0777 means
This code means the transmission computer detected an electrical fault in the circuit for shift solenoid E, such as a short, open, or out-of-range signal. It usually points to a failed solenoid, damaged wiring, or a corroded connector rather than a mechanical transmission problem. It's commonly fixed by repairing the wiring or replacing the solenoid, and it often doesn't require major internal transmission work.
Common symptoms
- Check engine light is on
- Harsh, erratic, or delayed shifting
- Transmission may enter limp mode
- Slipping or wrong gear selection
- Reduced fuel economy
Common causes
- Failed or shorted shift solenoid E
- Damaged or chafed wiring in the solenoid circuit
- Corroded or loose electrical connector
- Faulty transmission control module
- Poor ground or power supply to the solenoid
Typical repair cost
$200 – $750
Varies by vehicle and root cause.
Frequently asked questions
Can I keep driving with a P0777 code?
For short trips, usually yes, but you shouldn't rely on it. An electrical fault in the shift solenoid can cause erratic shifting or limp mode, so have it checked promptly to avoid added wear.
How much does it cost to fix a P0777 code?
Repairs typically range from about $200 to $750. A simple wiring or connector fix is on the lower end, while replacing the solenoid raises the cost.
Is a P0777 code serious?
It can be. The transmission may shift poorly or limp, and ignoring it risks more damage, so it's wise to address it soon even if the car still drives.
Does P0777 always mean a bad solenoid?
Not always. Because it's an electrical code, the cause can also be wiring, a connector, or the control module, so a proper diagnosis is important before replacing parts.