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 there's a problem with one of the parts in your car's transmission that helps it change gears. It's not working all the time like it should.
The P0764 code is triggered when the Powertrain Control Module (PCM) detects an intermittent fault in the operation of the shift solenoid C, which controls the flow of transmission fluid to change gears.
The shift solenoids are responsible for controlling the flow of hydraulic fluid in the transmission, which in turn controls the engagement and disengagement of gears. An intermittent issue with shift solenoid C means that its operation is not consistent, causing erratic shifting or failure to shift.
• Erratic shifting
• Transmission slipping
• Check Engine Light illuminated
• Faulty shift solenoid C
• Wiring issues such as damaged wires or poor connections
• Dirty or low transmission fluid
PCM: Powertrain Control Module, the computer that controls the engine and transmission.
Shift Solenoid: A component in the transmission that controls fluid flow to change gears.
• Check the transmission fluid level and condition.
• Inspect the wiring and connectors for damage or corrosion.
• Test the shift solenoid C for proper operation.
• Replace the faulty shift solenoid C.
• Repair or replace damaged wiring or connectors.
• Flush and refill the transmission fluid.
• OBD-II scanner
• Multimeter
• Transmission fluid pressure gauge
$150 - $400
Moderate
• Toyota Camry
• Honda Accord
• Ford F-150
• Regularly check and maintain transmission fluid levels.
• Perform periodic transmission service.
• Inspect wiring for wear and damage.
Transmission Issue
• Do not ignore the Check Engine Light.
• Have the transmission inspected by a professional.
• Avoid hard driving until the issue is resolved.
Check with your vehicle manufacturer for specific warranty coverage on transmission components.
This code has been a common issue in vehicles with automatic transmissions, often related to solenoid wear or fluid issues.
Moderate – While the vehicle may still be drivable, ignoring this issue can lead to more severe transmission damage.
Driving with a malfunctioning transmission can be dangerous. It is important to address this issue promptly to ensure vehicle safety.
• Vehicle at operating temperature
• Transmission in gear
The shift solenoid C is located inside the transmission, usually accessible by removing the transmission pan.
Q: Can I drive with a P0764 code?
A: It's not recommended to drive for long periods with this code as it can lead to further transmission damage.
Q: How do I reset the P0764 code?
A: After repairs, the code can be cleared with an OBD-II scanner. However, if the issue is not fixed, the code will return.
High-End · Full-system diagnostics
A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.
Network faults often require full-system access instead of a generic code reader alone.
View on Amazon
Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.
View on Amazon
Universal · Wire connectors and repair kit
Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.