Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with a sensor in your car that helps measure how fast part of the transmission is spinning. It's like when a toy's speedometer doesn't work right and sometimes shows the wrong speed.
The P2748 code indicates that the transmission control module (TCM) has detected an intermittent issue with the intermediate shaft speed sensor B circuit.
The intermediate shaft speed sensor B is responsible for monitoring the rotational speed of the intermediate shaft in the transmission. This information is crucial for the TCM to manage shifting and other transmission functions. An intermittent circuit issue suggests that the sensor's signal is not consistently reaching the TCM, which could be due to wiring problems, a faulty sensor, or a poor connection.
• Erratic or harsh shifting
• Transmission slipping
• Check Engine Light illuminated
• Faulty intermediate shaft speed sensor B
• Damaged or corroded wiring/connectors
• Poor electrical connection in the sensor circuit
Transmission Control Module (TCM): A computer that controls the operation of the transmission.
Intermediate Shaft: A shaft in the transmission that connects different gears.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the intermediate shaft speed sensor B for proper operation.
• Replace the intermediate shaft speed sensor B if faulty.
• Repair or replace damaged wiring or connectors.
• Ensure all connections are secure and corrosion-free.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• Toyota Camry
• Honda Accord
• Ford F-150
• Regularly inspect and maintain transmission components.
• Keep electrical connections clean and secure.
• Address any Check Engine Light issues promptly.
Sensor Issue
• Do not ignore the Check Engine Light; get it checked soon.
• If you notice shifting problems, drive carefully to avoid further damage.
• Schedule a diagnostic appointment with a professional mechanic.
Check your vehicle's warranty; transmission components may be covered under powertrain warranty.
This code has been associated with issues in vehicles with electronic transmission control systems, particularly in models with high mileage.
Moderate – While the vehicle may still be drivable, transmission issues can worsen over time and lead to more expensive repairs.
Driving with transmission issues can be unsafe and may lead to further vehicle damage. Address this code promptly.
• Vehicle at operating temperature
• Transmission in drive mode
The intermediate shaft speed sensor B is typically located on the transmission housing, near the intermediate shaft.
Q: Can I drive with a P2748 code?
A: It's possible to drive, but not recommended. Transmission issues can worsen and lead to more serious problems.
Q: How can I prevent this code from appearing again?
A: Regular maintenance and inspections of the transmission and its components can help prevent this issue.
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