1.5L I4 TurboFWDCVTgasturbo
5 active safety recalls on this vehicle — view recalls
Founding sponsor spot is openYour name on every procedure for this vehicle, permanently.Sponsor — $99 →
P1786moderate severityPowertrain

Shift Control System 3-2 Malfunction

on 2016 Honda Civic 1.5L I4 Turbo · FWD

What this code means

The 3-to-2 downshift control is not functioning properly within the transmission. This may cause rough downshifts or missed gear changes.

Symptoms

  • Rough 3-2 downshifts
  • Erratic shifting
  • Check engine light on

Common causes

  • Faulty shift solenoid
  • Low or dirty transmission fluid
  • Worn internal clutch pack
  • Faulty PCM

Diagnostic steps

  1. Scan for stored codes
  2. Check transmission fluid level and condition
  3. Test shift solenoid operation
  4. Inspect internal transmission components

Other Powertrain codes on this vehicle

🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Mechanic · 20+ years. Spot an error? Use the Help link above — a human reads every report.
Stuck on this repair? Take it to The Diag Desk — ask a master tech about this exact car → real human answer within 24h, never AI
⚠ STILL BEHIND THE PAYWALL
The 2016 Honda Civic repair data is incomplete because no one has sponsored it yet. For $99, we generate the full step-by-step procedures, then fact-check them with a second AI pass and your expert review. Your name on every procedure, permanently.
The same data would cost $169/mo from Mitchell1 or $30/year from ALLDATAdiy — and you'd be renting access, not freeing it. Sponsor once, free forever.
Sponsor the Honda Civic — $99 →
Building an app?
Free API access to all this data — 10 requests/day, no card required.
Get an API key →
Run a shop?
Manage repairs, estimates, and customers with ShopBase — $249/mo, all features included.
Try ShopBase →