P0771🔧 Transmission / Shift solenoidsStop and fix promptly

P0771: Shift Solenoid E Performance or Stuck Off (Meaning, Causes, Fixes)

Reviewed 2026-10-25 · Based on 2 cited source(s)

What P0771 means

Automatic transmissions shift by sending fluid pressure to the right clutches and bands at the right time, and the shift solenoids open and close valves in the valve body to do that. OBD-Codes.com (John Ingalls, former service manager and Air Force mechanic) describes P0771 as a generic code for a detected performance problem or stuck-off condition in the shift solenoid E circuit, seen by the powertrain control module (PCM), on vehicles including Chrysler, Ford, Dodge, Hyundai, Kia, Ram, Lexus, Toyota, Mazda, Honda and VW. It says the number of shift solenoids depends on how many gears the transmission has, that the E-solenoid codes are P0770 through P0774, and that an overdrive or other transmission warning lamp may also come on. RepairPal names it Shift Solenoid "E" Performance/Stuck Off, but its explanation uses the same generic wording as its other shift solenoid codes: the TCM sets P0771 when it detects a pressure control solenoid is not performing as desired. Note that RepairPal's P0770 page describes solenoid E as the torque converter lock-up solenoid on some vehicles, but its P0771 page doesn't say that, and OBD-Codes.com treats E as a regular shift solenoid, so check your vehicle's service information for what solenoid E controls.

Severity: can I keep driving?

Stop and fix promptly

Get it checked soon, and don't keep driving hard on it. RepairPal rates P0771 Urgent, meaning it can cause severe damage or be unsafe. OBD-Codes.com says the severity normally starts as moderate but can become severe rapidly if it isn't fixed, and lists transmission slipping, overheating, catching in gear and limp mode among the symptoms. If the transmission slips, overheats, gets stuck in one gear or drops into limp mode, limit driving and have it diagnosed. An open code can also fail an OBD2 emissions inspection.

Common symptoms

Likely causes

Roughly most to least common, based on the sources below. Your vehicle may differ.

  1. Faulty shift solenoid (both sources)
  2. Faulty or damaged wiring, or a corroded or damaged connector (both sources list wiring)
  3. Low transmission fluid level (both sources)
  4. Transmission control module (TCM) failure (RepairPal)
  5. Dirty or contaminated fluid, or a dirty or clogged transmission filter (OBD-Codes.com)
  6. Defective valve body or restricted hydraulic passages (OBD-Codes.com)
  7. Internal transmission failure (OBD-Codes.com)
  8. Faulty PCM (OBD-Codes.com)

Diagnostic steps you can do

⚠ Before you start

Work on a cool engine, parked on level ground with the parking brake set. Never work under a car supported only by a jack.

  1. Write down every code stored with P0771 and the freeze frame data; other transmission codes, such as other E-solenoid codes (P0770, P0772, P0773 and P0774) or codes for solenoids A through D, help narrow the problem.
  2. Look up technical service bulletins for your year, model and transmission, and check when the fluid and filter were last changed, as OBD-Codes.com recommends.
  3. Check the transmission fluid level and look for contamination; both sources list low fluid as a cause, and OBD-Codes.com lists dirty fluid and a clogged filter, which can make a solenoid stick.
  4. Inspect the wiring and connectors to the transmission solenoids, transmission pump and PCM for scraping, rubbing, bare wires, burn spots, corrosion and damaged pins, and check the shift linkage for security and binding where your transmission has one (OBD-Codes.com).
  5. With power removed, OBD-Codes.com says wiring continuity should read 0 ohms unless your service data says otherwise; resistance or no continuity points to an open or shorted wire. Voltage specs vary by vehicle, so follow your vehicle's troubleshooting chart.

Typical fixes

Repair costs vary widely by vehicle, region, parts brand and shop, so we don't quote prices. Get a written estimate after diagnosis.

🛠 When to call a pro

  • The transmission slips, overheats, sticks in a gear or goes into limp mode; RepairPal rates P0771 Urgent
  • OBD-Codes.com says the advanced steps are vehicle specific and need a digital multimeter and the vehicle's own technical references, with voltage specs varying by year and model
  • Several transmission codes are stored at once, or the code returns after the fluid and wiring check out

Where to buy

Plain search links. Always match parts to your exact year, make, model and engine.

OBD2 scanners on Amazon Parts at Advance Auto Parts catalog at RockAuto

FAQs

Is P0771 serious?

Yes, it should be fixed soon. RepairPal rates it Urgent. OBD-Codes.com says it usually starts as moderate but can become severe rapidly if not corrected, with slipping, overheating, catching in gear and limp mode possible.

Can I drive with P0771?

Neither source gives a safe distance. Because RepairPal rates it Urgent and OBD-Codes.com says it can worsen quickly, keep driving to a minimum and stop if the transmission slips, overheats or goes into limp mode.

What does stuck off mean?

OBD-Codes.com says P0771 is associated with a detected performance problem or a stuck-off situation in the shift solenoid E circuit, meaning the solenoid isn't doing its job or isn't opening when commanded. Neither source describes the exact test the computer runs, and it varies by transmission, so check your vehicle's service information.

What is the difference between P0770 and P0771?

Both involve shift solenoid E. OBD-Codes.com describes P0770 as a general malfunction in the solenoid E circuit and P0771 as a performance problem or stuck-off condition. The listed symptoms, causes and repairs are the same on its pages for both codes.

Why do the sources disagree?

RepairPal says the TCM sets the code when a pressure control solenoid isn't performing as desired and lists the TCM as a cause, while OBD-Codes.com describes a performance or stuck-off problem in the solenoid E circuit seen by the PCM and lists the PCM. OBD-Codes.com also lists more causes, including dirty fluid, a clogged filter, the valve body and internal transmission failure, and rates severity as moderate at first rather than Urgent.

Sources

  1. OBD-Codes.com: P0771 Shift Solenoid E Performance / Stuck Off
  2. RepairPal: P0771 Shift Solenoid "E" Performance/Stuck Off (rated Urgent)

Last reviewed 2026-10-25. Code definitions and repair steps can vary by manufacturer. Confirm with your vehicle's service information.