OBD-II Code · Transmission
P0710
Transmission Fluid Temperature Sensor Circuit
Severity
medium
Worth booking. It costs fuel, emissions or comfort until it is fixed.
Can you drive it
Only if running normally
A short trip to a shop may be reasonable if the light is steady and the car runs normally. Stop safely for a flashing light, severe shaking, overheating, loss of power, or another urgent warning. The code alone cannot confirm safety.
Indicative cost (USD)
$150–$400
Varies by vehicle, diagnosis, parts, and local labor. This is not a repair quote.
TFT sensor circuit fault.
How a shop works this
Work from evidence to part, not the other way round. A code names a circuit or a symptom; it does not name the part that failed.
Note every code that is set, not just this one.
Codes that appear together usually narrow the cause faster than any one of them read alone.
Read the freeze frame — the conditions the fault was recorded under.
Cold or warm, idle or load, road speed and engine speed. A fault that only appears cold is a different fault from one that only appears under load, even with the same code on the scanner.
Confirm the fault is current rather than history.
Clear the code and see whether it returns under those same conditions. A code that does not come back may have been logged during a repair, a flat battery, or a bad connection that has since been disturbed.
Then work the likely-causes list in the order shown.
That order is what a shop checks first for this code — wiring and connections before the component they run to, because a connector costs nothing to inspect and is a common answer.
If the code comes back after a repair, the underlying fault is still there. That is the point to bring in a scanner with live data and freeze-frame, or a shop that has one.
Common symptoms
- Check engine light
- Possible limp mode
Likely causes
- Failed TFTMost common
- Wiring
Read the full diagnostic procedureP0710 indicates a general circuit fault on the transmission fluid temperature (TFT) sensor input to the TCM/PCM, the module saw a signal that is outs…
P0710 indicates a general circuit fault on the transmission fluid temperature (TFT) sensor input to the TCM/PCM, the module saw a signal that is outside the valid sensor envelope but did not necessarily peg high or low long enough to set the more specific P0712 or P0713. The TFT sensor is a negative-temperature-coefficient thermistor, resistance drops as fluid warms: typical reading is roughly 9,000-15,000 ohms at 32F (0C), 2,000-3,000 ohms at 176F (80C, normal operating temp), and 700-1,000 ohms at 248F (120C, hot).
Start cheap
scan live data for trans fluid temp at key-on cold and compare against ambient, a reading more than 15F off ambient on a cold-soaked vehicle is suspect; drive the vehicle and watch the temp climb smoothly to 170-200F over 10-15 minutes, any sudden jumps, drops, or flatline holds confirm an electrical fault. Inspect the external case connector at the transmission for fluid weeping past the seal into the connector, a chronic cause of intermittent TFT faults. The expensive misdiagnosis: on most 2003+ ZF, Aisin, GM 6T/8L, and Ford 6R/10R transmissions the TFT sensor is integrated into the internal mechatronic/solenoid body and is not individually serviceable, sensor replacement means pulling the pan and replacing the entire solenoid pack or mechatronic unit, do not authorize the job without first confirming the external harness and connector are clean, because a $40 wiring repair beats a $1,800 mechatronic swap.
Vehicle-specific patterns2007-2013 BMW E90/E92/E93 with ZF 6HP19/21 sees TFT faults from mechatronic sleeve leaks letting ATF weep into the external connector and wick up the…
- 2007-2013BMW E90/E92/E93 with ZF 6HP19/21 sees TFT faults from mechatronic sleeve leaks letting ATF weep into the external connector and wick up the harness, BMW SI B24 03 09 covers the sleeve replacement;
- 2006-2012Ford Fusion/Mercury Milan with 6F35 has an internal TFT sensor in the solenoid body that fails as a complete unit;
- 2007-2014GM 6L80/6L90 (Silverado, Tahoe, Camaro) integrates TFT into the TEHCM mechatronic assembly, GM bulletin PIP4783 documents the diagnostic flow.
Estimated repair$150 to $2,200.
Look up another code
P0710 — frequently asked
What does a P0710 code mean?
TFT sensor circuit fault.
What causes a P0710 code?
Common causes: Failed TFT; Wiring.
What are the symptoms of a P0710 code?
Typical symptoms: Check engine light; Possible limp mode.
Is it safe to drive with a P0710 code?
Only if running normally. A short trip to a shop may be reasonable if the light is steady and the car runs normally. Stop safely for a flashing light, severe shaking, overheating, loss of power, or another urgent warning. The code alone cannot confirm safety. Estimated repair: $150-$400.
How do I diagnose a P0710 code?
Work from evidence to part, not the other way round. A code names a circuit or a symptom; it does not name the part that failed. 1. Note every code that is set, not just this one. 2. Read the freeze frame — the conditions the fault was recorded under. 3. Confirm the fault is current rather than history. 4. Then work the likely-causes list in the order shown.
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