Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with one of the parts that helps control the pressure in your car's transmission. It's like a switch that isn't working right, so the car can't change gears smoothly.
The P27DD code indicates an issue with the electrical circuit for the pressure control solenoid T in the transmission. This solenoid helps manage hydraulic pressure for gear changes.
The P27DD code is triggered when the Powertrain Control Module (PCM) detects an open or malfunction in the control circuit of the pressure control solenoid T. This solenoid is responsible for regulating hydraulic pressure within the transmission to ensure smooth gear shifting.
• Harsh or erratic shifting
• Transmission slipping
• Poor fuel economy
• Illuminated check engine light
• Faulty pressure control solenoid T
• Open or shorted wiring in the solenoid circuit
• Poor electrical connection at the solenoid
• Faulty PCM
PCM: Powertrain Control Module
Solenoid: An electromechanical device that controls fluid flow
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors to the solenoid.
• Test the solenoid for proper operation.
• Check the PCM for any faults.
• Replace the faulty pressure control solenoid.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the PCM if necessary.
• OBD-II scanner
• Multimeter
• Screwdriver set
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Dodge Ram
• Regular transmission fluid changes
• Inspect wiring and connectors periodically
• Avoid aggressive driving habits
Transmission Control Issue
• Avoid driving the vehicle until repaired to prevent further damage.
• Consult a professional mechanic for a thorough diagnosis.
Check with your vehicle manufacturer for warranty coverage on transmission components.
The P27DD code has been noted in vehicles with high mileage or those that frequently tow heavy loads.
High – This issue can lead to transmission damage if not addressed promptly.
Driving with a malfunctioning transmission can be unsafe and may lead to further vehicle damage.
• Engine running
• Transmission in gear
The pressure control solenoid is located inside the transmission, usually accessible by removing the transmission pan.
Q: Can I drive with a P27DD code?
A: It's not recommended to drive with this code as it can cause further transmission damage.
Q: How do I clear the P27DD code?
A: After repairs, you can clear the code using an OBD-II scanner, but it may return if the issue isn't fixed.
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