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 the car's transmission, which helps change gears smoothly, isn't working as well as it should. It's like when you're riding a bike and the chain doesn't switch gears properly.
The P1902 code indicates that the transmission control module (TCM) has detected a problem with the pressure control solenoid 'C', which is responsible for managing hydraulic pressure for gear shifts.
The pressure control solenoid 'C' is part of the automatic transmission system. It regulates hydraulic pressure to ensure smooth gear shifts. If the solenoid is not functioning correctly, it can lead to improper gear shifts and transmission performance issues.
• Harsh or delayed gear shifts
• Transmission slipping
• Check engine light illuminated
• Faulty pressure control solenoid 'C'
• Wiring issues or poor electrical connections
• Transmission fluid level or quality problems
Solenoid: An electromechanical device that controls a valve.
Transmission: A system in a vehicle that transmits power from the engine to the wheels.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connections to the solenoid.
• Check the transmission fluid level and quality.
• Replace the faulty pressure control solenoid 'C'.
• Repair or replace damaged wiring or connectors.
• Change the transmission fluid if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• Ford Focus
• Mazda 3
• Chevrolet Malibu
• Regularly check and maintain transmission fluid levels.
• Inspect wiring and connectors periodically.
• Schedule regular transmission maintenance.
Transmission Issue
• Avoid driving aggressively until the issue is fixed.
• Get the vehicle checked by a professional mechanic.
Check with your vehicle manufacturer as transmission components may be covered under powertrain warranty.
This code has been associated with transmission solenoid issues in several vehicle models over the years.
Moderate – Address the issue soon to avoid further transmission damage.
Driving with transmission issues can lead to safety hazards. Address the problem promptly to ensure safe vehicle operation.
• Vehicle at operating temperature
• Transmission in drive mode
The pressure control solenoid 'C' is located inside the transmission, often accessible by removing the transmission pan.
Q: Can I drive with a P1902 code?
A: It's not recommended to drive for extended periods with this code, as it can lead to more severe transmission issues.
Q: How can I prevent this issue?
A: Regular maintenance of the transmission system and fluid can help prevent solenoid issues.
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