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 a part in the car that helps control how smoothly the car shifts gears. It's like if a light switch is stuck on when it should be able to turn off too.
The P27C8 code indicates that the vehicle's computer has detected a high voltage condition in the circuit that controls the pressure control solenoid P.
The pressure control solenoid P is responsible for regulating the hydraulic pressure in the transmission. A 'Control Circuit High' condition suggests that the voltage in the circuit is higher than expected, which could be due to an electrical fault such as a short to power or a malfunctioning solenoid.
• Harsh or erratic shifting
• Transmission slipping
• Illuminated check engine light
• Faulty pressure control solenoid P
• Short circuit in the wiring
• Faulty transmission control module (TCM)
Solenoid: An electromechanical device that controls fluid flow in the transmission.
Transmission Control Module (TCM): A computer that manages the operation of the transmission.
• Use an OBD-II scanner to verify the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the pressure control solenoid P for proper operation.
• Replace the faulty pressure control solenoid P.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the transmission control module if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regular transmission fluid changes
• Routine inspection of transmission wiring
• Avoid harsh driving conditions
Transmission Issue
• Avoid driving the vehicle until repaired to prevent further damage.
• Consult a professional mechanic for an accurate diagnosis.
Check if the vehicle's transmission is still under warranty as repairs might be covered.
This code has been more common in vehicles with high mileage or those that have not had regular transmission maintenance.
Moderate – Should be addressed soon to avoid further transmission issues.
Driving with a malfunctioning transmission can lead to unsafe driving conditions. Address the issue promptly.
• Vehicle at operating temperature
• Transmission in gear
The pressure control solenoid is located inside the transmission, typically accessible by removing the transmission pan.
Q: Can I drive with a P27C8 code?
A: It's not recommended to drive with this code as it can lead to further transmission damage.
Q: How do I reset the check engine light after fixing the issue?
A: Use an OBD-II scanner to clear the code after the repair is completed.
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