P0710 moderate

Transmission Fluid Temperature Sensor Circuit

The P0710 code means the vehicle's onboard diagnostic system has detected: Transmission Fluid Temperature Sensor Circuit. This is a moderate severity code.

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Keep driving?: Short distances only
DIY difficulty: moderate
Estimated cost: $80 - $300 (parts and labor)

Check Your Fluid First

ANCEL AD310 OBD-II Scanner

Read and clear transmission codes. Many trans codes are caused by low or burnt fluid -- check level and color before assuming the worst.

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Read Transmission Codes

LAUNCH CRP123X (Reads All Systems)

Basic scanners only read engine codes. This reads transmission, ABS, and airbag too.

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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

Read TFT sensor temperature on a scan tool -- should match ambient when cold
Measure TFT sensor resistance and compare to spec -- typically 100K ohms at 68F
Inspect TFT sensor connector for corrosion or transmission fluid contamination
Check wiring from sensor to TCM for damage
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.