Free API
P0883moderate severityPowertrain

TCM Power Input Signal High

on 2007 Honda Odyssey 3.5L V6 · FWD

What this code means

The TCM is seeing a power input voltage that is too high. This can be caused by a wiring short or charging system fault.

Symptoms

  • Harsh or erratic shifts
  • Transmission warning light on
  • Possible limp mode

Common causes

  • Short to voltage in TCM wiring
  • Overcharging alternator
  • Faulty voltage regulator
  • Faulty transmission control module

Diagnostic steps

  1. Measure TCM power input voltage
  2. Check charging system output voltage
  3. Inspect wiring for shorts to power
  4. Replace TCM if supply is correct

Other Powertrain codes on this vehicle

🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 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 2007 Honda Odyssey 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 Odyssey — $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 →