Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer is having trouble talking to a part that helps control the flow of oil in the transmission. It's like when a walkie-talkie loses its signal.
This code indicates that there is an issue with the electrical circuit that controls the Pressure Control Solenoid R in the transmission.
The P27CD code is triggered when the Powertrain Control Module (PCM) detects an open circuit or a problem in the control circuit of the Pressure Control Solenoid R. This solenoid is responsible for regulating hydraulic pressure in the transmission, which is crucial for proper gear shifting.
• Transmission slipping
• Harsh or delayed shifting
• Transmission overheating
• Check Engine Light illuminated
• Faulty Pressure Control Solenoid R
• Open or shorted wiring in the solenoid circuit
• Poor electrical connection at the solenoid
• Faulty PCM
PCM: Powertrain Control Module, the computer that controls engine and transmission functions.
Solenoid: An electromechanical device used to control the flow of fluid in the transmission.
• Check for any transmission-related trouble codes.
• Inspect the wiring and connectors for damage or corrosion.
• Test the Pressure Control Solenoid R for proper operation.
• Verify the PCM is functioning correctly.
• Repair or replace damaged wiring or connectors.
• Replace the faulty Pressure Control Solenoid R.
• Reprogram or replace the PCM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regular transmission fluid changes
• Routine inspection of transmission wiring
• Avoiding harsh driving conditions
Transmission Control Issue
• Avoid driving at high speeds until the issue is resolved.
• Consult a professional mechanic for a thorough diagnosis.
Transmission components may be covered under the powertrain warranty. Check with your vehicle manufacturer.
This code has been more common in vehicles with high mileage or those that have not had regular transmission maintenance.
Moderate – It's advisable to address this issue soon to avoid further transmission damage.
Ignoring transmission issues can lead to unsafe driving conditions. Always address Check Engine Light warnings promptly.
• Vehicle at operating temperature
• Transmission in drive mode
The Pressure Control Solenoid R is located inside the transmission, usually mounted on the valve body.
Q: Can I drive with a P27CD 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 issue?
A: Regular transmission maintenance and fluid changes can help prevent solenoid issues.
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