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 the sensor that checks how hot the transmission fluid is. It's not working right.
The Transmission Fluid Temperature Sensor C monitors the temperature of the transmission fluid. If the sensor's readings are outside the expected range, the code P274B is triggered.
The P274B code indicates that the Transmission Fluid Temperature Sensor C is providing a reading that is outside the expected range. This could be due to a malfunctioning sensor, wiring issues, or a problem with the transmission control module.
• Check Engine Light is on
• Transmission may overheat
• Poor transmission performance
• Faulty Transmission Fluid Temperature Sensor C
• Wiring issues or poor connections
• Faulty transmission control module
Transmission: A system in a vehicle that transmits power from the engine to the wheels.
Sensor: A device that detects or measures a physical property and records, indicates, or otherwise responds to it.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage.
• Test the Transmission Fluid Temperature Sensor C for proper operation.
• Replace the Transmission Fluid Temperature Sensor C if faulty.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the transmission control module if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly check transmission fluid levels.
• Perform routine maintenance on transmission.
• Inspect wiring and connectors periodically.
Sensor Issue
• Avoid driving the vehicle until the issue is resolved.
• Consult with a professional mechanic for accurate diagnosis.
Check with your vehicle's manufacturer for warranty coverage on transmission components.
This code is relatively common in vehicles with electronic transmission controls, especially as they age.
Moderate – It should be addressed soon to prevent transmission damage.
Ignoring this issue can lead to transmission damage and potential safety hazards.
• Engine at operating temperature
• Vehicle in park or neutral
The Transmission Fluid Temperature Sensor is typically located inside the transmission or on the transmission housing.
Q: What happens if I ignore the P274B code?
A: Ignoring this code can lead to transmission overheating and potential damage.
Q: Can I drive with a P274B code?
A: It's not recommended to drive with this code, as it can lead to transmission issues.
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