Acura P1677: A/T (TCM) FI Data Line Circuit Malfunction

Is your scanner showing Acura P1677?
No worries. We'll show you what it means and how to deal with it.

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OBD Codex, Administrator

Acura P1677: A/T (TCM) FI Data Line Circuit Malfunction

DIY Difficulty Level
Repair Cost
Can I Still Drive?

What Does The Acura P1677 Code Mean?

Key on or engine running; and the PCM detected an unexpected voltage condition on the TCM FI Data Line circuit during the test.

What Are The Potential Causes Of The Acura P1677 Code?

  • A/T FI data line is open or shorted to ground
  • A/T FI data line is shorted to VREF or system power
  • 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:

>>> Acura Engine Control Module
>>> Twippo 372Pcs Waterproof Wire Connectors Kit

Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!

Reference Sources

Acura P1677, DTCDECODE.

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