P0108moderate severityPowertrain

MAP/BARO Pressure Circuit High Input

on 2012 GMC Terrain 3.6L V6 · FWD

What this code means

The MAP sensor signal voltage is above the maximum expected value.

Symptoms

  • Check Engine Light
  • Lean running
  • Poor acceleration
  • Surge

Common causes

  • Open circuit in MAP signal wire
  • Faulty MAP sensor
  • Short to voltage

Diagnostic steps

  1. Test MAP voltage
  2. Check for open circuits
  3. Test sensor reference voltage

Repair notes

Repair wiring or replace MAP sensor.

Other Powertrain codes on this vehicle

⚠ STILL BEHIND THE PAYWALL
The 2012 GMC Terrain 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 GMC Terrain — $99 →
Building an app?
Free API access to all this data — 50 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 →