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 there is a problem with a part of your car that controls the pressure of the transmission fluid. It's not working well with the car's computer.
The vehicle's computer has detected that the data from the Pressure Control Solenoid G is not matching the expected parameters.
P27AD indicates that the data received from the Pressure Control Solenoid G is incompatible with the expected data range or format as defined by the vehicle's powertrain control module (PCM). This can affect the transmission's ability to control hydraulic pressure accurately.
• Transmission slipping
• Harsh or erratic shifting
• Illuminated check engine light
• Faulty pressure control solenoid
• Wiring issues or poor connections
• Faulty PCM
PCM: Powertrain Control Module
Solenoid: An electromechanical device used to control fluid flow in the transmission
• Use a scan tool to check for additional trouble codes.
• Inspect the wiring and connectors for damage or corrosion.
• Test the pressure control solenoid for proper operation.
• Replace the faulty pressure control solenoid.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the PCM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regular transmission fluid changes
• Routine inspections of wiring and connectors
• Timely servicing of transmission components
Transmission Control Issue
• Avoid driving aggressively until the issue is resolved.
• Have the vehicle inspected by a professional technician.
• Monitor for any changes in transmission behavior.
Check with your vehicle manufacturer for specific warranty coverage related to transmission components.
This code is relatively uncommon and typically associated with specific transmission issues in certain vehicle models.
Moderate – While the vehicle may still be drivable, it is recommended to address the issue to prevent further transmission damage.
Ignoring this code could lead to transmission failure, which may pose safety risks. Always address vehicle issues promptly.
• Vehicle must be at operating temperature.
• Transmission in drive mode during testing.
The pressure control solenoid is located inside the transmission, often accessible by removing the transmission pan.
Q: Can I drive with a P27AD code?
A: It's possible to drive short distances, but it's not recommended as it may cause further damage to the transmission.
Q: How do I reset the check engine light after fixing the issue?
A: Use an OBD-II scanner to clear the code after repairs are completed.
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