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 that checks how hot the transmission fluid is. It's like a thermometer for the car's transmission, and it's not working right.
The transmission fluid temperature sensor monitors the temperature of the transmission fluid. If the sensor or its circuit is shorted, it can't send the correct temperature readings to the car's computer.
The P1704 code is triggered when the Powertrain Control Module (PCM) detects a short circuit in the transmission fluid temperature sensor 'A' circuit. This sensor is responsible for providing temperature data to ensure optimal transmission operation.
• Check Engine Light is on
• Transmission may overheat
• Poor transmission performance
• Faulty transmission fluid temperature sensor
• Damaged wiring or connectors
• Short circuit in the sensor circuit
PCM: Powertrain Control Module
OBD-II: On-Board Diagnostics II
• Use an OBD-II scanner to confirm the code
• Inspect the transmission fluid temperature sensor and its wiring
• Check for any signs of short circuits or damage
• Replace the faulty transmission fluid temperature sensor
• Repair or replace damaged wiring or connectors
• Clear the code and test drive the vehicle to ensure the issue is resolved
• OBD-II scanner
• Multimeter
• Wrench set
$150 - $300
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly check transmission fluid levels
• Inspect wiring for wear and tear
• Schedule routine maintenance checks
Sensor Issue
• Do not ignore the Check Engine Light
• Avoid driving the vehicle until the issue is diagnosed and repaired
Check if the vehicle is still under warranty, as sensor issues may be covered.
This code has been associated with sensor failures due to heat and electrical issues.
Moderate – Addressing this issue promptly can prevent further transmission damage.
Driving with a faulty transmission sensor can lead to overheating and potential transmission failure.
• Vehicle at operating temperature
• Transmission fluid level is correct
The transmission fluid temperature sensor is typically located on or inside the transmission housing.
Q: Can I drive with a P1704 code?
A: It's not recommended, as it can lead to transmission overheating and further damage.
Q: How can I prevent this code from appearing?
A: Regular maintenance and checking transmission fluid levels can help prevent this issue.
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