Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that a part in your car's transmission, called a solenoid, is not working properly. It's like a switch that helps change gears, and right now, it's stuck and not doing its job.
The transmission control module (TCM) monitors the operation of the shift solenoids. If it detects that the solenoid 'E' is not performing as expected or is stuck in the 'off' position, it triggers the P0771 code.
The shift solenoid E is responsible for controlling the flow of transmission fluid to create the hydraulic pressure needed to engage the correct gear. If the solenoid is stuck off, it means it is not allowing fluid to pass through, preventing the transmission from shifting properly.
• Transmission slipping
• Harsh or delayed shifting
• Transmission stuck in a single gear
• Check Engine Light illuminated
• Faulty shift solenoid E
• Transmission fluid is dirty or low
• Wiring issues or poor electrical connections
• Faulty transmission control module (TCM)
Solenoid: An electromechanical device that controls the flow of fluid in the transmission.
Transmission Control Module (TCM): A computer that controls the operation of the transmission.
• Check transmission fluid level and condition
• Inspect wiring and connectors to the solenoid
• Test the shift solenoid E for proper operation
• Use a scan tool to check for additional codes
• Replace or repair the shift solenoid E
• Flush and replace the transmission fluid
• Repair or replace damaged wiring or connectors
• Replace the transmission control module if faulty
• OBD-II scanner
• Multimeter
• Transmission fluid pressure gauge
$150 - $400
Moderate
• Toyota Camry
• Honda Accord
• Ford F-150
• Regular transmission fluid changes
• Routine transmission inspections
• Addressing check engine light promptly
Transmission Issue
• Avoid driving the vehicle until repaired to prevent further damage.
• Consult a professional mechanic for diagnosis and repair.
Check if the vehicle's powertrain warranty covers transmission components.
This code has been commonly reported in vehicles with higher mileage or those that have not had regular transmission maintenance.
Moderate – Should be addressed soon to prevent potential transmission damage.
Driving with a malfunctioning transmission can lead to safety hazards and further vehicle damage.
• Vehicle should be at operating temperature
• Perform tests in a safe environment
The shift solenoid E is located inside the transmission, usually accessible by removing the transmission pan.
Q: Can I drive with a P0771 code?
A: It's not recommended to drive with this code as it can lead to further transmission damage.
Q: How do I know if my shift solenoid is bad?
A: Symptoms like slipping gears, harsh shifting, or a check engine light can indicate a bad solenoid.
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