⚡ AUTO CODE FIX
🔍
EngineMinor✅ DIY Friendly

P0112

Intake Air Temperature Circuit Low Input

IAT sensor voltage is lower than expected — ECM thinks air is very cold.

SeverityMinor
CategoryEngine
Est. Repair Cost$20–$150
Code TypePowertrain
DIY RepairYes

⚡ Common Causes

⚠️ Symptoms

✅ How to Fix — Step by Step

  • Step 1:Check sensor connector for corrosion
  • Step 2:Test sensor resistance
  • Step 3:Replace IAT sensor
  • Step 4:Check wiring for short
💡 Pro Tip: Low IAT voltage causes rich fueling — watch for increased fuel consumption.

Repair Cost Estimate

Full Repair Estimate
$20–$150
DIY Possible?
YES
Severity
Minor

Frequently Asked Questions

What does OBD2 code P0112 mean?+
P0112 stands for Intake Air Temperature Circuit Low Input. IAT sensor voltage is lower than expected — ECM thinks air is very cold.
What causes code P0112?+
Short to ground in IAT circuit; Faulty sensor; Connector corrosion; ECM issue
How do I fix code P0112?+
Check sensor connector for corrosion; Test sensor resistance; Replace IAT sensor; Check wiring for short
How much does it cost to fix P0112?+
Estimated repair cost for P0112 is $20–$150.
Is P0112 DIY-friendly?+
Yes — P0112 is generally DIY-friendly with basic tools.

AI Diagnosis

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