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 the car's transmission, like a tiny robot, isn't doing its job right. It's supposed to help change gears smoothly, but it's not moving or is stuck.
The P27D9 code indicates an issue with the pressure control solenoid 'T' in the transmission, which is either not performing correctly or is stuck in the 'off' position.
The pressure control solenoid 'T' is responsible for regulating hydraulic pressure in the transmission to ensure smooth gear shifts. If it fails to operate correctly or becomes stuck, it can lead to improper transmission performance.
• Harsh or erratic shifting
• Transmission slipping
• Check Engine Light illuminated
• Faulty pressure control solenoid
• Electrical issues such as damaged wiring or connectors
• Transmission fluid contamination
Solenoid: An electromechanical device that controls the flow of fluid in the transmission.
Transmission: A system in a vehicle that transmits power from the engine to the wheels.
• Perform a visual inspection of the wiring and connectors to the solenoid.
• Check the transmission fluid level and condition.
• Test the solenoid for proper operation using a multimeter.
• Replace the faulty pressure control solenoid.
• Repair or replace damaged wiring or connectors.
• Flush and replace the transmission fluid if contaminated.
• OBD-II scanner
• Multimeter
• Wrench set
$200 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regular transmission fluid changes
• Routine inspection of transmission components
• Addressing Check Engine Light warnings promptly
Transmission Performance Issue
• Avoid driving aggressively until the issue is resolved.
• Schedule a diagnostic appointment with a mechanic.
Check if your vehicle's powertrain warranty covers transmission solenoid issues.
This code has been associated with transmission performance issues in various vehicle models over the years, often linked to solenoid failures.
Moderate – It should be addressed soon to prevent further transmission damage.
Driving with transmission issues can be unsafe and may lead to further vehicle damage.
• Vehicle at operating temperature
• Transmission in gear
The pressure control solenoid is located inside the transmission, often accessible by removing the transmission pan.
Q: Can I drive with a P27D9 code?
A: It's not recommended to drive for extended periods with this code, as it can lead to further transmission damage.
Q: How is a pressure control solenoid replaced?
A: Replacing a solenoid typically involves draining the transmission fluid, removing the transmission pan, and accessing the solenoid for replacement.
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