What does P0113 mean?
The intake air temperature sensor is reading abnormally high — the ECM thinks incoming air is hotter than it actually is.
Quick Decision Guide
- Failed IAT sensor element
- Open circuit in IAT sensor wiring
- Corroded sensor connector
When to stop driving
Safe to drive. Engine may run lean or have reduced performance until repaired.
Reviewed by ratchit Automotive Solutions for clarity and inspection-first safety framing. Not a substitute for professional diagnosis.
Repair Decision & Cost Guide
Use this guide to decide what to inspect first, what it may cost, and when to move from DIY checks to professional diagnosis.
P0113 usually points to a vacuum leak or dirty MAF — rarely a failed fuel pump. Inspect simple causes before replacing major parts.
DIY vs. Shop
Can you keep driving?
Best first DIY check
Don't replace this first
When to seek a shop
Recommended next action
Estimated Repair Cost
Inspection cost
$0–$25 DIY scanner
Shop diagnostic cost
$80–$150 (typical shop diagnostic fee)
Shop repair cost
$80–$400
Diagnostic uncertainty: This code points to a system or condition, not a guaranteed failed part. Inspect before replacing.
Cost variation: Costs vary by vehicle, location, part quality, labor rate, and the confirmed root cause.
Inspect Before Replacing
These checks are cheap, fast, and rule out the most common causes before spending money on parts.
- 1Check IAT sensor reading with engine off — it should match ambient temperature within 10°F.
Track this fuel/air issue
Save this issue to My Garage, track what you inspect, and build service history for this vehicle.
V-IQ readiness preview: Low impact — small but tracked. Tracking active codes and resolutions builds a service history we use to estimate V-IQ readiness over time.
Understanding P0113 in detail
P0113 means the Intake Air Temperature (IAT) sensor is reporting a temperature higher than the ECM considers plausible given current conditions. The IAT sensor is often integrated into the Mass Airflow (MAF) sensor housing or located in the air intake tube. It provides data the ECM uses to adjust fuel delivery — hot air is less dense and requires less fuel; cold air is denser and needs more fuel. When the sensor reads excessively high (usually above 250°F when ambient is much cooler), the ECM may reduce fuel delivery inappropriately, causing lean running and reduced performance. Common causes include a failed sensor element, damaged wiring, or a poor ground connection that sends a maximum voltage signal to the ECM.
Symptoms of P0113
- Check engine light on
- Reduced power in cold weather
- Hard starting when cold
- Rough idle during warm-up
- Possible lean misfire codes (P0171/P0174)
Common causes
- Failed IAT sensor element
- Open circuit in IAT sensor wiring
- Corroded sensor connector
- Poor ground connection
- Damaged MAF/IAT sensor housing
How to diagnose P0113
Steps ordered by urgency — tackle Now items first.
- NowCheck IAT sensor reading with engine off — it should match ambient temperature within 10°F.
- SoonInspect IAT sensor wiring and connector for damage or corrosion.
- SoonTest sensor resistance (typically 1K–5K ohms depending on temperature).
- LaterReplace IAT sensor or MAF/IAT assembly if sensor tests faulty.
How to fix P0113
Fixes listed in order of likelihood and cost-efficiency.
- 1Clean sensor connector
- 2Replace IAT sensor
- 3Replace MAF/IAT sensor assembly
- 4Repair wiring to sensor
Want to check your full vehicle?
Run a free maintenance scan to see what else needs attention based on your year, make, model, mileage, and climate.
Recommended tools & parts
These recommendations appear because this issue commonly requires inspection in this system area. ratchit does not recommend replacing parts until the likely cause is confirmed.
Vacuum Leak & Air-Fuel Inspection Kit
Find vacuum leaks and confirm fuel trims before replacing sensors or pumps
Find vacuum leaks before replacing sensors Verify fitment for your year/make/model.
Sensor & Diagnostic Kit
Test and replace common engine sensors — O2, MAF, cam/crank
Check sensor behavior before replacing parts Verify fitment for your year/make/model.
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Estimated Repair Cost — P0113
Ranges vary by vehicle, region, and shop. Use as a ballpark — always get a quote.
DIY estimate
$15 – $40
Shop estimate
$80 – $200
DIY estimate
$50 – $150
Shop estimate
$200 – $400
Cost data is estimated and may not reflect your specific vehicle or location.
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Frequently Asked Questions
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