What Does P0715 Mean?
The transmission fluid temperature sensor circuit is producing intermittent signals. This is a variant of P0714 used by some manufacturers, indicating the TFT sensor signal is cutting in and out or fluctuating erratically. The TCM may temporarily lose temperature compensation, causing inconsistent shift behavior.
Common Causes
35%
Loose or corroded TFT sensor connector
25%
Failing TFT sensor with internal intermittent fault
25%
Damaged wiring in the sensor circuit (cracked, chafed, or frayed)
10%
Intermittent ground connection for the sensor circuit
5%
TCM connector pin issue causing intermittent signal loss
Diagnostic Steps
1
Monitor the TFT sensor PID in live data while driving. Record the data stream and look for erratic spikes or dropouts in the temperature reading.
2
Perform a wiggle test at the sensor connector and along the harness while watching the TFT reading in real-time. Note where movement causes the reading to change.
3
Inspect the TFT sensor connector for corroded pins, water intrusion, or loose terminal fit. Clean with contact cleaner and apply dielectric grease after repair.
4
Measure the sensor resistance at known temperatures. Gently flex the sensor and wiring during the test — resistance should remain stable.
5
Trace the wiring from the sensor to the TCM, looking for damage at clip points, harness bend points, and areas near moving components.
Estimated Repair Cost
$75 - $350
Parts + labor, varies by vehicle and location
The transmission fluid temperature sensor circuit is producing intermittent signals. This is a variant of P0714 used by some manufacturers, indicating the TFT sensor signal is cutting in and out or fluctuating erratically. The TCM may temporarily lose temperature compensation, causing inconsistent s...
The most common cause of P0715 (Transmission Fluid Temperature Sensor Circuit Intermittent) is: Loose or corroded TFT sensor connector
Typical repair costs for P0715 range from $75 to $350, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe for short-term driving. The transmission will function normally most of the time but may have brief periods of incorrect shift scheduling during signal dropouts. Avoid heavy-load driving until repaired.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0715 to identify the root cause.
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Quick Info
Category
Powertrain
System
Transmission
Difficulty
Type
Generic (SAE)
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