Back to 2000 Ford Excursion
Help
2000 FORD EXCURSION
7.3L V8 Power Stroke Diesel•4WD•AUTOMATIC•diesel•turbo
6 active safety recalls on this vehicle — view recalls
Founding sponsor spot is openYour name on every procedure for this vehicle, permanently.Sponsor — $99 →
Repairs0Labor512Torque3548Fluid10DTC790Battery1Maintenance0Recalls6
P1112low severityPowertrain

IAT Sensor Intermittent

on 2000 Ford Excursion 7.3L V8 Power Stroke Diesel · 4WD

What this code means

The Intake Air Temperature sensor signal is intermittent. The PCM detects erratic fluctuations in the IAT signal, which affects the air/fuel mixture calculations.

Symptoms

  • Check Engine Light
  • Rough idle when cold
  • Poor cold-start performance
  • Fluctuating idle

Common causes

  • Loose IAT sensor connector
  • Corroded IAT sensor wiring
  • Faulty IAT sensor
  • Damaged connector pins

Diagnostic steps

  1. Inspect IAT sensor connector for corrosion or looseness
  2. Wiggle test wiring while monitoring IAT reading
  3. Test IAT sensor resistance (should change smoothly with temperature)
  4. Check wiring continuity

Repair notes

Repair connector or wiring. Replace IAT sensor if faulty.

🔌 Don't have a code reader?
Any of these will read and clear this code — pick by how deep you want to go.
Budget handheld~$40
ANCEL AD410 →
No-phone-needed handheld — reads, clears, live data, freeze frame.
✓ ANCEL official store
Serious DIY~$100
BlueDriver Pro →
Enhanced codes (ABS, airbag, TPMS) plus repair reports.
SHOP FAVORITE
Shop-grade tablet~$300
Autel MaxiCOM MK808S →
Bidirectional tests, service resets, all systems.
✓ Autel official store
Pro diagnostics$1,500+
Autel MaxiSys MS906 Pro →
Full-system pro platform — topology mapping, ECU coding, the works.
✓ Autel official store
As an Amazon Associate and Autel/ANCEL partner, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.

Other Powertrain codes on this vehicle

🔌 Need this data in your app? It's all in the free API →
🔧 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
Share:XRedditFBWhatsAppThreadsEmail
⚠ STILL BEHIND THE PAYWALL
The 2000 Ford Excursion 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 Ford Excursion — $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 →