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 helps control the pressure of the transmission fluid is not working right. It's like a switch that isn't turning on or off properly.
The P27D5 code indicates an issue with the electrical circuit controlling the pressure control solenoid 'S'. This solenoid is responsible for regulating hydraulic pressure in the transmission.
The pressure control solenoid 'S' is part of the transmission system and is used to manage the hydraulic pressure for optimal gear shifting. An open circuit or fault in the control circuit can lead to improper transmission function.
• Transmission slipping
• Harsh or delayed gear shifts
• Check Engine Light illuminated
• Reduced fuel efficiency
• Faulty pressure control solenoid
• Open or shorted wiring in the solenoid circuit
• Poor electrical connection at the solenoid
• Faulty transmission control module (TCM)
Solenoid: An electromechanical device that controls fluid flow.
Transmission Control Module (TCM): A computer that controls the operation of the transmission.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the solenoid for proper resistance and operation.
• Check the TCM for faults or updates.
• Replace the faulty pressure control solenoid.
• Repair or replace damaged wiring or connectors.
• Update or replace the transmission control module if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools (screwdrivers, wrenches)
$150 - $400
Moderate
• Vehicle 1
• Vehicle 2
• Vehicle 3
• Regular transmission fluid checks and changes
• Routine inspection of electrical connectors and wiring
• Timely servicing of the transmission system
Transmission System Issue
• Avoid hard driving until the issue is resolved.
• Consult a professional mechanic for accurate diagnosis.
• Regular maintenance can prevent future issues.
Check with the vehicle manufacturer for specific powertrain warranty coverage.
This code has been associated with transmission issues in vehicles with electronic control systems.
Moderate – Addressing this issue promptly can prevent further transmission damage.
Driving with a faulty transmission can be unsafe and may lead to further vehicle damage.
• Vehicle at operating temperature
• Transmission in drive mode
The pressure control solenoid is located inside the transmission, usually accessible by removing the transmission pan.
Q: What happens if I ignore this code?
A: Ignoring this code can lead to more severe transmission damage and costly repairs.
Q: Can I drive with a P27D5 code?
A: It's possible to drive, but it's not recommended as it may cause further damage.
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