What Does P0775 Mean?
The TCM has detected that Shift Solenoid E (also referred to as Pressure Control Solenoid B on some platforms) is not performing as expected or is stuck in the off position. This solenoid manages hydraulic line pressure for specific transmission operations. When stuck off, the transmission loses the ability to properly regulate pressure for certain gear engagements, leading to harsh shifts, slipping, or failure to shift.
Common Causes
35%
Failed pressure control solenoid B / shift solenoid E (stuck valve or worn plunger)
25%
Contaminated or degraded transmission fluid causing solenoid to stick
20%
Restricted or worn valve body passages affecting solenoid performance
12%
Internal transmission wear causing pressure loss
8%
TCM calibration error or incorrect adaptive values
Diagnostic Steps
1
Check transmission fluid level and condition — contaminated fluid is the most common cause of solenoid sticking issues.
2
Monitor live data for solenoid E/PCS B commanded duty cycle versus actual line pressure readings to confirm the solenoid is not responding.
3
Perform a line pressure test at the appropriate port to determine if pressure is consistently low when the solenoid should be controlling it.
4
Drop the pan, inspect for debris, and remove the valve body for inspection of solenoid bores and hydraulic passages.
5
Remove and bench-test the solenoid for proper mechanical operation, flow rates, and response to electrical commands.
6
After repair, perform a fluid flush, install a new filter, and reset TCM adaptive values with a full relearn drive cycle.
Estimated Repair Cost
$250 - $1,600
Parts + labor, varies by vehicle and location
The TCM has detected that Shift Solenoid E (also referred to as Pressure Control Solenoid B on some platforms) is not performing as expected or is stuck in the off position. This solenoid manages hydraulic line pressure for specific transmission operations. When stuck off, the transmission loses the...
The most common cause of P0775 (Shift Solenoid E Performance or Stuck Off) is: Failed pressure control solenoid B / shift solenoid E (stuck valve or worn plunger)
Typical repair costs for P0775 range from $250 to $1,600, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Driving with this code may result in harsh or delayed shifts, gear slippage, or transmission overheating. The vehicle may enter limp mode. Avoid towing and heavy loads. Have the transmission serviced promptly to prevent further internal damage.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0775 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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