P0771: Shift Solenoid E Performance or Stuck Off
What to do
The symptom may be as mild as gear changes that feel spaced oddly. Worth investigating anyway; on these transmissions mild is how this fault usually starts.
What this code means
Solenoid E is electrically sound but not moving hydraulically. On a transmission with many closely spaced ratios the missing gear may not be obvious as an absence — the module simply uses the ratio either side of it — so the complaint is often a shift pattern that feels wrong rather than a gear that is plainly gone.
Likely causes
Start here
- Debris in the transmission fluid · moderate
- Failed shift solenoid · moderate
- Low or degraded transmission fluid · easy
Less common
- Stuck valve in the valve body · specialist
- Low transmission line pressure · specialist
Symptoms
Components involved
Information, not instruction
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Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
Community experience
Be the first to write this up
Nothing posted about this yet. Whatever you found is worth writing down — even a dead end saves someone the same afternoon.
What makes one worth reading:
- The car — make, model, year and engine. The same fault behaves differently on each.
- What you measured, not only what you replaced.
- What actually fixed it — or that nothing did, which is worth knowing too.
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