Honda P1646: MOTFSA Signal Circuit Malfunction
Is your scanner showing Honda P1646?
No worries. We'll show you what it means and how to deal with it.
Honda P1646: MOTFSA Signal Circuit Malfunction
OVERVIEWWhat Does The Honda P1646 Code Mean?
Key on or engine running, and the PCM detected an unexpected voltage condition on the MOTFSA signal circuit during the CCM test.
What Are The Potential Causes Of The Honda P1646 Code?
- MOTFSA signal circuit is shorted to VREF or system power
- MOTFSA signal circuit is open or shorted to ground
- MOTFSA is damaged or has failed
- 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
>>> Honda PCM
>>> Honda Body Control Module
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
Honda P1646, DTCDECODE.
