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 the car's computer has found a problem with the part that helps change gears smoothly. It's like a switch that isn't working right.
The P0964 code indicates that the transmission control module (TCM) has detected an open circuit or a problem with the pressure control solenoid B.
The pressure control solenoid B is responsible for regulating hydraulic pressure in the transmission. An open circuit or fault in this solenoid can lead to improper transmission operation. The TCM monitors the solenoid's electrical circuit and sets the P0964 code when it detects a problem.
• Harsh or erratic shifting
• Transmission slipping
• Transmission overheating
• Check Engine Light illuminated
• Faulty pressure control solenoid B
• Open or shorted wiring in the solenoid circuit
• Poor electrical connection at the solenoid
• Faulty transmission control module (TCM)
OBD-II: On-Board Diagnostics, a standardized system for vehicle self-diagnosis and reporting.
TCM: Transmission Control Module, the computer that controls the transmission.
• Scan the vehicle for additional trouble codes.
• Inspect the wiring and connectors to the pressure control solenoid B.
• Test the solenoid for proper resistance and operation.
• Check the TCM for proper function.
• Repair or replace damaged wiring and connectors.
• Replace the faulty pressure control solenoid B.
• Reprogram or replace the TCM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Honda Accord
• Ford F-150
• Toyota Camry
• Regular transmission fluid changes
• Routine electrical system checks
• Avoiding harsh driving conditions
Transmission Control System
• Do not ignore the Check Engine Light.
• Consult with a professional mechanic for diagnosis.
• Avoid driving the vehicle if it shows severe symptoms.
Check with your vehicle manufacturer for warranty coverage on transmission components.
This code has been associated with transmission issues in various models, often due to electrical problems or solenoid failures.
Moderate – Addressing this issue promptly can prevent further transmission damage.
Driving with a faulty transmission can lead to unsafe driving conditions. It's important to address this issue to ensure vehicle safety.
• Vehicle at operating temperature
• Transmission in drive mode
The pressure control solenoid B is located inside the transmission, usually accessible by removing the transmission pan.
Q: Can I drive my car with a P0964 code?
A: It's not recommended to drive with this code, as it can lead to transmission damage or unsafe driving conditions.
Q: How can I reset the Check Engine Light after fixing the issue?
A: You can 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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