Transmission Fluid Temperature Sensor Circuit
What does P0710 mean?
The P0710 code means the vehicle's onboard diagnostic system has detected: Transmission Fluid Temperature Sensor Circuit. This is a moderate severity code.
Common Symptoms
- Check Engine Light illuminated
- Transmission may not shift into overdrive
- Harsh or delayed shifting
- Transmission stuck in limp mode
Probable Causes (Ranked by Likelihood)
- Faulty transmission fluid temperature sensor Very High
- Damaged TFT sensor wiring High
- Corroded TFT sensor connector Moderate
- TCM input circuit fault Low
Step-by-Step Diagnostic Procedure
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Read TFT sensor temperature on a scan tool -- should match ambient when cold
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Measure TFT sensor resistance and compare to spec -- typically 100K ohms at 68F
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Inspect TFT sensor connector for corrosion or transmission fluid contamination
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Check wiring from sensor to TCM for damage
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Replace the TFT sensor if readings are out of specification
Frequently Asked Questions
Can I drive with code P0710?
Drive short distances. Without accurate fluid temperature data, the TCM cannot adjust shift timing and pressure properly, which may cause harsh shifts or overheating.
Where is the transmission fluid temperature sensor?
The TFT sensor is usually inside the transmission, threaded into the valve body or transmission pan. Some vehicles have it in the external cooler line.
Can low transmission fluid cause P0710?
Low fluid will not directly cause P0710, but it can expose the sensor, leading to inaccurate readings. Always check fluid level when diagnosing transmission codes.