P0710 · blink 38 – TRANSMISSION FLUID TEMPERATURE SENSOR MALFUNCTION
- System
- ECT U441E
- Dashboard light
- CHECK ENGINE (MIL) does NOT light (DTC stored in memory only)
- Applies to
- 4-speed A/T U441E. Not a PK fitment (the PK EPC lists only A246E and U340E). Other-market fitment unverified.
- Check-engine blink code
- 38
- Description
- TRANSMISSION FLUID TEMPERATURE SENSOR MALFUNCTION
- Detection / symptoms
- Detection: Either (a) or (b) is detected for 0.5 sec. or more. (2−trip detection logic) (a) Temperature sensor resistance is less than 79 W (b) After the engine has been operating for 15 minutes or more, the resistance at the temp. sensor is more than 156 kW
- Possible causes
- Wire harness; ATF temperature sensor; Engine ECU
- What to check
- Workshop check order (RM821E): INSPECT TRANSMISSION WIRE(ATF temperature sensor) -> CHECK WIRE HARNESS AND CONNECTOR(Transmission wire − ECU)
- Confidence
- high (official Toyota RM821E)
From the factory service material. Clear the code and test-drive to confirm it returns. Search all fault codes · Common problems · Warning lights