What Does P0771 Mean?
The TCM has detected that Shift Solenoid E is not performing correctly or is stuck in the off position. Shift Solenoid E is responsible for controlling hydraulic fluid flow to engage specific gear ratios in the automatic transmission. When this solenoid fails or sticks off, the transmission cannot properly route fluid pressure, resulting in shifting problems. This is a performance/mechanical code rather than an electrical fault.
Common Causes
35%
Faulty shift solenoid E (internal mechanical failure or stuck valve)
25%
Contaminated or degraded transmission fluid causing solenoid sticking
20%
Blocked or restricted hydraulic passages in the valve body
12%
Worn transmission internal components causing abnormal pressure
8%
TCM calibration issue or corrupted adaptive shift values
Diagnostic Steps
1
Inspect transmission fluid level and condition — look for discoloration, burnt smell, or metallic particles that indicate internal wear.
2
Use live data to monitor shift solenoid E commanded state versus actual response to isolate whether the issue is electrical command or mechanical response.
3
Perform a line pressure test at the solenoid E circuit to verify hydraulic pressure is within specification.
4
Drop the transmission pan and inspect for excessive debris, then remove and inspect the valve body for restricted passages or worn bores.
5
Bench-test solenoid E for proper mechanical function, checking flow rates and on/off response times.
6
Reset adaptive shift values after repair and perform a transmission relearn drive cycle.
Estimated Repair Cost
$200 - $1,500
Parts + labor, varies by vehicle and location
The TCM has detected that Shift Solenoid E is not performing correctly or is stuck in the off position. Shift Solenoid E is responsible for controlling hydraulic fluid flow to engage specific gear ratios in the automatic transmission. When this solenoid fails or sticks off, the transmission cannot p...
The most common cause of P0771 (Shift Solenoid E Performance or Stuck Off) is: Faulty shift solenoid E (internal mechanical failure or stuck valve)
Typical repair costs for P0771 range from $200 to $1,500, depending on the vehicle, location, and whether you do it yourself or go to a shop.
The vehicle can typically still be driven but may exhibit harsh shifts, delayed engagement, or limp mode operation. Avoid sustained high-speed driving or towing. Prompt diagnosis is recommended to prevent cascading transmission damage.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0771 to identify the root cause.
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Quick Info
Category
Powertrain
System
Automatic Transmission
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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