What does code P1687 mean on Acura vehicles?
High input detected on automatic transmission fuel injection signal B.
OBD-II Code Acura
P1687 — Acura — A/T FI Signal B High Input
High input detected on automatic transmission fuel injection signal B.
Common symptoms
- Transmission enters fail-safe mode.
Possible causes
- Electrical short in circuit.
Initial recommendation
Inspect A/T FI circuit 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
Use the app to combine Acura code P1687 with your vehicle's actual symptoms for more complete diagnostic guidance.
Go to the app View more brands