Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This means there's a problem with a part in the car's transmission that helps control how smoothly the car changes gears. It's like a switch that might be stuck or not working right.
The P0746 code indicates that the transmission control module (TCM) has detected a problem with the pressure control solenoid 'A', which is responsible for regulating the hydraulic pressure in the transmission.
The pressure control solenoid 'A' is an electro-hydraulic valve that controls the transmission fluid pressure to ensure smooth gear shifts. If the solenoid is stuck off or not performing as expected, it can cause harsh or erratic shifting.
• Harsh or erratic shifting
• Transmission slipping
• Overheating transmission
• Check Engine Light illuminated
• Decreased fuel efficiency
• Faulty pressure control solenoid 'A'
• Dirty or contaminated transmission fluid
• Transmission fluid leak
• Wiring issues or poor electrical connection
• Faulty transmission control module (TCM)
Solenoid: An electromechanical device that controls fluid flow.
Transmission Control Module (TCM): A computer that controls the transmission functions.
• Check the transmission fluid level and condition.
• Inspect wiring and connectors to the solenoid.
• Test the pressure control solenoid 'A' for proper operation.
• Use a scan tool to check for other related codes.
• Perform a continuity test on the solenoid circuit.
• Replace the pressure control solenoid 'A'.
• Flush and replace the transmission fluid.
• Repair or replace damaged wiring or connectors.
• Replace the transmission control module if necessary.
• Clear the codes and test drive to confirm repair.
• OBD-II scanner
• Multimeter
• Transmission fluid pump
• Wrench set
• Diagnostic software
$150 - $400
Moderate
• Nissan Altima
• Toyota Camry
• Ford F-150
• Regularly check and maintain transmission fluid levels.
• Schedule routine transmission service.
• Address transmission issues promptly to avoid further damage.
Transmission Issue
• Avoid driving aggressively until the issue is resolved.
• Seek professional diagnostic services if unsure about repairs.
Transmission components may be covered under the powertrain warranty. Check with your vehicle manufacturer.
P0746 is a common code for vehicles with automatic transmissions and is often related to solenoid or fluid issues.
Moderate – It's important to address this issue soon to prevent further transmission damage.
Driving with a malfunctioning transmission can be unsafe. Address the issue promptly to ensure vehicle safety.
• Vehicle must be at operating temperature.
• Test should be conducted on a level surface.
The pressure control solenoid is located inside the transmission, usually accessible by removing the transmission pan.
Q: Can I drive with a P0746 code?
A: It's not recommended to drive for long periods with this code, as it can lead to further transmission damage.
Q: How can I prevent P0746 from occurring?
A: Regular maintenance and fluid checks can help prevent this code from appearing.
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