Acura P1678: A/T (TCM) FPTDR Signal Line Circuit Malfunction
Is your scanner showing Acura P1678?
No worries. We'll show you what it means and how to deal with it.
Acura P1678: A/T (TCM) FPTDR Signal Line Circuit Malfunction
OVERVIEWWhat Does The Acura P1678 Code Mean?
Key on or engine running; and the PCM detected an unexpected (intermittent) interruption of the TCM FPTDR Line signal in the test.
What Are The Potential Causes Of The Acura P1678 Code?
- A/T FTPDR data line is open (intermittent fault)
- A/T FTPDR data line is shorted to ground (intermittent fault)
- A/T FTPDR data line is shorted to VREF or power (intermittent)
- TCM or PCM has failed
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
>>> Acura Engine Control Module
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
2001 Engine Performance Acura Self-Diagnostics, MDX, 3.2CL & 3.2TL, pp.55.
