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 that controls the pressure of the transmission fluid is not working properly. It's like a faucet that won't turn off, letting too much fluid through.
The transmission control module (TCM) has detected that the pressure control solenoid T is not functioning as expected. It is stuck in the 'on' position, which affects the fluid pressure regulation in the transmission.
The P27DA code is triggered when the TCM detects that the pressure control solenoid T is stuck in the 'on' position. This solenoid is responsible for regulating hydraulic pressure within the transmission, and when it is stuck, it can lead to improper shifting and transmission performance issues.
• Harsh or erratic shifting
• Transmission slipping
• Illuminated check engine light
• Faulty pressure control solenoid T
• Wiring issues such as shorts or open circuits
• Transmission fluid contamination or low fluid level
Transmission Control Module (TCM): An electronic device that controls the transmission functions.
Solenoid: A coil of wire acting as a magnet when carrying electric current, used to control a mechanical device.
• Use an OBD-II scanner to confirm the code.
• Inspect the transmission fluid level and condition.
• Check the wiring and connectors to the solenoid for damage or corrosion.
• Replace the faulty pressure control solenoid T.
• Repair or replace damaged wiring or connectors.
• Flush and replace the transmission fluid if contaminated.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Dodge Ram
• Regularly check and maintain transmission fluid levels.
• Perform scheduled transmission maintenance.
• Inspect wiring and connectors periodically.
Transmission Control Issue
• Do not ignore the check engine light.
• Have the vehicle inspected by a professional if you experience shifting issues.
Check with your vehicle manufacturer for warranty coverage on transmission components.
This code has been associated with transmission issues in vehicles with electronic control systems.
Moderate – It is advisable to address this issue soon to avoid further transmission damage.
Driving with transmission issues can be unsafe and may lead to further vehicle damage.
• Vehicle at operating temperature
• Transmission in drive
The pressure control solenoid T is located inside the transmission, often accessible by removing the transmission pan.
Q: Can I drive with a P27DA code?
A: It's not recommended to drive for extended periods with this code, as it can lead to further transmission damage.
Q: How can I prevent this code from appearing?
A: Regular transmission maintenance and fluid checks can help prevent this issue.
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