P0771Shift Solenoid E Performance/Stuck Off
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- What shift solenoid E does depends on the transmission. On Ford's 6R80 and 6F35/6F55 it is an on/off valve that moves a multiplex valve, so solenoid D feeds either the low/reverse brake or the 4-5-6 clutch; on the 6R140 and 5R110W it is a proportional clutch valve with separate short codes (P0985/P0986). On Saab's Aisin 5-speed E is valve S1. P0771 is Ford's functional check by gear ratio over 10 events (2012) or 3 (2020–23, 2023 diesel). On the 6R80/6F it means the multiplex valve stays in its rest position, so solenoid D acts on the wrong clutch; valve and spool cannot be told apart. On the 6R140 the 4-5-6 clutch does not apply. Ford counts the whole clutch system in, and its 10R80 and 8F35 bulletins list P0771 with mechanical repairs. Slipping or missing gears and limp mode follow.
- What you may notice
- Slipping or flare on shifts
- Missing gear (e.g. 4th–6th)
- Limp mode
- Check engine light
- Likely causes
- LikelyValve body or multiplex valve sticking (debris, dirt)
- LikelyClutch, piston seal or clutch cylinder leaking or worn
- PossibleFluid level low or fluid contaminated
- PossibleSolenoid E mechanically stuck
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €400 – €4,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.