Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
Your car has a part that helps control the pressure in the transmission, and it's getting too much power. It's like a light bulb that's too bright because it's getting too much electricity.
This code indicates that the control circuit for the pressure control solenoid N is experiencing higher than expected voltage.
The pressure control solenoid N is responsible for regulating hydraulic pressure in the transmission. A 'Control Circuit High' error suggests that the electrical circuit controlling this solenoid is receiving a higher voltage than normal, which could be due to a wiring issue, a faulty solenoid, or a problem with the transmission control module.
• Harsh or erratic shifting
• Transmission slipping
• Illuminated check engine light
• Faulty pressure control solenoid N
• Wiring issues such as open or short circuits
• Malfunctioning transmission control module
Solenoid: An electromechanical device that controls fluid flow.
Transmission Control Module: A computer that controls the transmission's operation.
• Inspect the wiring and connectors for damage or corrosion.
• Test the pressure control solenoid N for proper operation.
• Check the transmission control module for faults.
• Repair or replace damaged wiring or connectors.
• Replace the faulty pressure control solenoid N.
• Reprogram or replace the transmission control module if necessary.
• OBD-II scanner
• Multimeter
• Wiring repair kit
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect and maintain transmission wiring.
• Ensure proper transmission fluid levels.
• Avoid aggressive driving habits.
Transmission Control System Issue
• If you notice unusual shifting, have your vehicle checked promptly.
• Avoid driving at high speeds until the issue is resolved.
Check with your vehicle manufacturer for warranty coverage on transmission components.
This code has been associated with vehicles experiencing transmission control issues, particularly in models with electronically controlled transmissions.
Moderate – Address the issue soon to avoid potential transmission damage.
Driving with transmission issues can be unsafe. Address the problem to ensure vehicle safety.
• Vehicle must be running.
• Transmission must be engaged.
The pressure control solenoid N is located within the transmission housing.
Q: Can I drive with a P27C0 code?
A: It's best to have your vehicle inspected as soon as possible to prevent further damage.
Q: How do I reset the check engine light after fixing the issue?
A: Use an OBD-II scanner to clear the code, or disconnect the battery for a few minutes to reset the system.
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