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 thinks the transmission fluid is getting too hot. It's like when you have a fever and your body feels too warm.
The P273F code is triggered when the transmission fluid temperature sensor B detects a temperature that is higher than the normal operating range.
The transmission fluid temperature sensor B monitors the temperature of the transmission fluid. This sensor helps the vehicle's computer to manage the transmission's operation by adjusting shift points and cooling strategies. If the sensor detects temperatures that are too high, it can indicate a potential issue with the transmission cooling system or an internal transmission problem.
• Transmission slipping
• Poor fuel economy
• Transmission overheating warning light
• Low transmission fluid level
• Faulty transmission fluid temperature sensor
• Transmission fluid cooler blockage
Transmission: The 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.
• Check transmission fluid level and condition.
• Inspect the transmission fluid cooler for blockages.
• Test the transmission fluid temperature sensor for proper operation.
• Refill or replace transmission fluid if necessary.
• Replace the transmission fluid temperature sensor if faulty.
• Clear any blockages in the transmission fluid cooler.
• OBD-II scanner
• Multimeter
• Transmission fluid level gauge
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly check and maintain transmission fluid levels.
• Ensure the transmission cooling system is functioning properly.
• Schedule regular transmission service intervals.
Sensor Issue
• Avoid driving the vehicle hard until the issue is resolved.
• Monitor the transmission temperature gauge if available.
• Have the vehicle inspected by a professional mechanic.
Transmission components may be covered under powertrain warranty. Check with your vehicle manufacturer.
This code has been associated with transmission overheating issues, often due to low fluid levels or sensor malfunctions.
High – Driving with overheated transmission fluid can cause significant damage.
Operating a vehicle with an overheated transmission can lead to safety hazards and potential legal issues if it results in a breakdown.
• Vehicle at operating temperature
• Transmission fluid level checked
The transmission fluid temperature sensor is typically located on or near the transmission housing.
Q: What happens if I ignore the P273F code?
A: Ignoring this code can lead to severe transmission damage and costly repairs.
Q: Can I drive with a P273F code?
A: It's not recommended to drive with this code as it indicates a potential overheating issue.
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.