What Does P0714 Mean?
The transmission fluid temperature sensor A circuit is producing intermittent signals. The TCM sees the temperature reading jumping, dropping out, or fluctuating unexpectedly. This is typically caused by a loose connection or failing sensor rather than a complete circuit failure. Shift quality may vary unpredictably.
Common Causes
35%
Loose or corroded TFT sensor connector causing intermittent contact
25%
Failing TFT sensor with intermittent internal resistance changes
25%
Chafed or partially broken wire in the sensor harness
10%
Poor ground connection with intermittent resistance
5%
TCM connector intermittent contact issue
Diagnostic Steps
1
Monitor TFT live data continuously while driving. Log the data and look for sudden temperature jumps (e.g., 180°F to -40°F back to 180°F) that indicate momentary open circuits.
2
With the engine running, wiggle the TFT sensor connector and associated harness while watching the live data. Any fluctuation during movement pinpoints the fault area.
3
Inspect the sensor connector for spread terminals, corrosion, or water intrusion. Check terminal tension by gently pulling on individual wires — they should not pull out.
4
Measure the sensor resistance while tapping and flexing the sensor body. Stable readings indicate the sensor is OK; jumping readings confirm internal failure.
5
Check the harness routing for areas where it may flex during engine/transmission movement. Look for cracked insulation or copper showing through.
Estimated Repair Cost
$75 - $350
Parts + labor, varies by vehicle and location
The transmission fluid temperature sensor A circuit is producing intermittent signals. The TCM sees the temperature reading jumping, dropping out, or fluctuating unexpectedly. This is typically caused by a loose connection or failing sensor rather than a complete circuit failure. Shift quality may v...
The most common cause of P0714 (Transmission Fluid Temperature Sensor A Circuit Intermittent) is: Loose or corroded TFT sensor connector causing intermittent contact
Typical repair costs for P0714 range from $75 to $350, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to drive short-term. The intermittent nature means the system works correctly most of the time. However, during dropouts the TCM may temporarily use default values, causing brief shift quality changes. Repair when convenient to prevent the condition from worsening.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0714 to identify the root cause.
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Quick Info
Category
Powertrain
System
Transmission
Difficulty
Type
Generic (SAE)
Recommended Tools
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