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 your car that helps control the pressure in the transmission is not working all the time. It's like a light switch that sometimes works and sometimes doesn't.
The P27DC code indicates that the vehicle's transmission control module (TCM) has detected an intermittent issue with the pressure control solenoid labeled 'T'. This solenoid is responsible for regulating hydraulic pressure in the transmission.
The pressure control solenoid T is part of the transmission system, which uses hydraulic pressure to change gears. An intermittent fault means that the solenoid is not consistently operating as expected, leading to potential issues with gear shifting and transmission performance.
• Erratic or harsh shifting
• Transmission slipping
• Check Engine Light illuminated
• Faulty pressure control solenoid T
• Wiring issues or poor connections in the solenoid circuit
• Transmission fluid contamination or low fluid levels
Solenoid: An electromechanical device that controls the flow of fluid in the transmission.
Transmission Control Module (TCM): A computer that controls the operation of the vehicle's transmission.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Check the transmission fluid level and condition.
• Replace the faulty pressure control solenoid T.
• Repair or replace damaged wiring or connectors.
• Change or top up the transmission fluid if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• Vehicle 1
• Vehicle 2
• Vehicle 3
• Regularly check and maintain transmission fluid levels.
• Perform scheduled transmission services.
• Inspect wiring and connectors for wear or damage.
Transmission Control Issue
• Avoid harsh driving conditions until the issue is resolved.
• Schedule a service appointment with a qualified mechanic.
Check with your vehicle manufacturer for warranty coverage on powertrain components.
This code is commonly associated with vehicles that have high mileage or have not had regular transmission maintenance.
Moderate – It should be addressed soon to prevent further transmission damage.
Driving with transmission issues can lead to unsafe driving conditions. Address the problem promptly.
• Vehicle at operating temperature
• Transmission in gear
The pressure control solenoid is located inside the transmission assembly.
Q: Can I drive with a P27DC code?
A: It's not recommended to drive for extended periods with this code, as it can lead to further transmission damage.
Q: How often should I check my transmission fluid?
A: It's a good practice to check transmission fluid levels every 30,000 to 60,000 miles, or as recommended by your vehicle's manufacturer.
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