Chevrolet P1684: Transmission Control Module (TCM) Power Up Temperature Sensor Performance
Is your scanner showing Chevrolet P1684?
No worries. We'll show you what it means and how to deal with it.
Chevrolet P1684: Transmission Control Module (TCM) Power Up Temperature Sensor Performance
OVERVIEWWhat Does The Chevrolet P1684 Code Mean?
The engine speed is greater than 450 RPM. DTC P1684 has not passed this key ON. The TCM power up temperature is between -39 and +149°C (-38 and +300°F).
How Can You Fix The Chevrolet P1684 Code?
Reprogram the TCM and retest the DTC to see if the DTC resets.
Recommended Parts
Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:
>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> Chevrolet Battery
>>> GM Genuine Parts 24252114 Transmission Control Module
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
GM, 2013, Service Bullettin – Prior To Any Circuit Testing.
