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 is having trouble reading the temperature of the transmission fluid because of a problem with one of the sensors.
The Transmission Fluid Temperature (TFT) Sensor B measures the temperature of the transmission fluid and sends this information to the vehicle's computer. This code indicates an issue with the sensor or its circuit.
The P2740 code is triggered when the Powertrain Control Module (PCM) detects a malfunction in the Transmission Fluid Temperature Sensor B circuit. This could be due to a faulty sensor, wiring issues, or a problem with the PCM itself. The sensor helps the PCM make decisions about shifting and transmission operation based on fluid temperature.
• Check Engine Light is on
• Transmission may overheat
• Poor fuel economy
• Faulty Transmission Fluid Temperature Sensor B
• Damaged or corroded wiring or connectors
• Faulty PCM
PCM: Powertrain Control Module, the vehicle's main computer for engine and transmission management.
TFT Sensor: Transmission Fluid Temperature Sensor, a device that measures the temperature of the transmission fluid.
• Scan for codes and freeze frame data
• Inspect the Transmission Fluid Temperature Sensor B and its wiring
• Test the sensor using a multimeter
• Replace the Transmission Fluid Temperature Sensor B
• Repair or replace damaged wiring or connectors
• Reprogram or replace the PCM if necessary
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly check and maintain transmission fluid levels
• Inspect wiring and connectors during routine maintenance
• Use manufacturer-recommended transmission fluid
Sensor Issue
• Avoid driving the vehicle if the transmission is overheating
• Have the vehicle inspected by a professional as soon as possible
Transmission-related components may be covered under powertrain warranty. Check with the manufacturer.
This code has been associated with issues in vehicles with high mileage or those that have not had regular transmission maintenance.
Moderate – It should be addressed soon to prevent potential transmission damage.
Ignoring this issue could lead to transmission failure, which may cause unsafe driving conditions.
• Vehicle at operating temperature
• Transmission in gear
The Transmission Fluid Temperature Sensor B is located inside the transmission, often near the transmission fluid pan.
Q: Can I drive with a P2740 code?
A: It's not recommended to drive for extended periods with this code as it can lead to transmission damage.
Q: How often should I check my transmission fluid?
A: Check your transmission fluid every 30,000 miles or as recommended by your vehicle's manufacturer.
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