What does code P1678 mean on Acura vehicles?
A persistent failure has been detected in the FPTDR signal line.
OBD-II Code Acura
P1678 — Acura — FPTDR Signal Line Failure (Persistent)
A persistent failure has been detected in the FPTDR signal line.
Common symptoms
- Transmission enters fail-safe mode.
Possible causes
- Electrical fault in FPTDR circuit.
Initial recommendation
Inspect FPTDR circuit and wiring.
Safety notice
This information is for guidance only. Brand-specific codes may vary by model, year, engine, transmission and vehicle configuration. It does not replace a physical inspection or diagnosis by a qualified mechanic. If the vehicle is unsafe to operate, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
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