P0714
Transmission Fluid Temperature Sensor A Circuit Intermittent
Encountering the engine check light code P0714 signifies an explicit mechanical or electrical operational breakdown categorized as "Transmission Fluid Temperature Sensor A Circuit Intermittent". Professional scanner tools usually flag this subsystem loop early on.
Driver's Summary
Storing code P0714 is your car's way of telling you something is wrong with the transmission fluid temperature sensor a circuit intermittent. In practice, this fault causes erratic shifting, transmission slipping, temp gauge fluctuates wildly. You can typically drive short distances, but ignoring this code long-term will cause accelerated component wear and higher repair costs.
Symptoms
Erratic shifting, transmission slipping, temp gauge fluctuates wildly
Common Causes
- Loose connection at the TFT sensor
- Frayed transmission wiring harness
- Internally failing TFT sensor
- Dirty transmission fluid affecting sensor reading
How to Fix
- 1 Secure and clean sensor connector
- 2 Repair transmission wiring harness
- 3 Replace Transmission Fluid Temperature sensor
- 4 Flush transmission fluid
Technical Explanation
The ECM detects code P0714 by continuously monitoring the relevant sensor circuit against calibrated threshold values stored in its non-volatile memory. The TCM compares the ratio between input turbine speed sensor and output speed sensor readings against the expected gear ratio stored for each commanded gear position. A deviation greater than a few percent indicates clutch slippage, solenoid malfunction, or internal mechanical failure. The MIL illuminates after the fault is confirmed on two consecutive drive cycles, and the freeze frame data captured at first detection is stored in the PCM's memory for diagnostic reference.
Is It Safe to Drive?
Code P0714 allows for cautious short-distance driving, but the underlying cause — most likely loose connection at the tft sensor — will worsen with time. Fuel economy suffers, and ignoring the fault for weeks can turn a $100 fix into a much larger repair bill.
Mechanic's Pro Tip
The most common mistake with P0714 is replacing the sensor without verifying the reference voltage and ground integrity first. Use a scan tool to monitor the sensor's live output; a truly failed sensor shows a stuck, flatlined reading — a sensor that fluctuates but reads slightly off usually indicates a wiring or vacuum issue, not a dead sensor. Always spray electrical contact cleaner on the connector pins before condemning the sensor.
Related Fault Codes
Frequently Asked Questions
What does OBD2 code P0714 mean?
OBD2 code P0714 refers to Transmission Fluid Temperature Sensor A Circuit Intermittent. Encountering the engine check light code P0714 signifies an explicit mechanical or electrical operational breakdown categorized as "Transmission Fluid Temperature Sensor A Circuit Intermittent". Professional scanner tools usually flag this subsystem loop early on.
What are the most common symptoms of DTC P0714?
Drivers experiencing code P0714 typically report: Erratic shifting, transmission slipping, temp gauge fluctuates wildly.
Is it safe to drive with trouble code P0714 active?
Code P0714 allows for cautious short-distance driving, but the underlying cause — most likely loose connection at the tft sensor — will worsen with time. Fuel economy suffers, and ignoring the fault for weeks can turn a $100 fix into a much larger repair bill.
How much does it cost to fix code P0714?
The estimated repair cost for P0714 ranges from $100 to $450 USD. Wiring repair: $100 - $200; Sensor and fluid change: $250 - $450
Wiring repair: $100 - $200; Sensor and fluid change: $250 - $450
Need Professional Diagnostic Assistance?
Always verify sensor signals and wiring integrity with an OBD2 scanner before purchasing replacement parts.
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