P0113
Fix within 1-2 weeksThe engine computer detects a very high voltage signal from the Intake Air Temperature (IAT) sensor, indicating an extremely cold air temperature that is not possible.
Code P0113 means your engine computer sees a very high voltage from the Intake Air Temperature sensor. Common causes: Faulty IAT sensor (70%), wiring issues (25%). Drivability: Yes, safe to drive, but fix within 1-2 weeks. Repair cost: $15-$150 DIY, $100-$300 professional.
Can I Drive With P0113?
Yes, safe to drive
No restrictions, but fix within 1-2 weeks to restore fuel economy and prevent further issues.
Stop driving immediately if: Flashing Check Engine Light, significant power loss, or a strong smell of fuel or rotten eggs from the exhaust.
Symptoms of P0113
- 1Check Engine Light is on
- 2Reduced fuel economy
- 3Rough idle, especially when cold
- 4Hard starting, particularly in cold weather
- 5Reduced engine power or sluggish acceleration
- 6Engine running rich (may see black smoke from exhaust)
Common Causes of P0113
Parts most likely causing this code, ranked by probability
The IAT sensor itself has failed internally, sending an incorrect high voltage signal to the engine computer.
70% of P0113 cases are fixed by replacing this part
An open circuit, corrosion, or a short to voltage in the IAT sensor's wiring or connector causes an incorrect high voltage reading.
25% of P0113 cases are fixed by repairing wiring or connectors
A rare internal fault within the engine computer can misinterpret the IAT sensor signal or fail to process it correctly.
5% of P0113 cases are fixed by replacing the ECM/PCM
Check These First (Before Buying Parts)
- Visually inspect the IAT sensor's electrical connector and wiring for any signs of damage, corrosion, or loose connections.
- If the IAT sensor is integrated into the Mass Air Flow (MAF) sensor, try cleaning the MAF sensor with MAF cleaner spray.
How to Diagnose P0113
- 1Visually inspect the IAT sensor and its electrical connector for any damage, corrosion, or loose connections.
- 2Using a multimeter, test the resistance of the IAT sensor at various temperatures (if standalone) or check live data with a scan tool for plausible temperature readings.
- 3Check for continuity and proper voltage at the IAT sensor connector, ensuring the wiring harness is intact between the sensor and the engine computer.
- 4If the sensor and wiring test good, consider further diagnosis of the engine computer, though this is a rare cause.
P0113 on Popular Vehicles
Toyota Camry
2002-2024On many Camry models, the IAT sensor is integrated into the Mass Air Flow (MAF) sensor. Replacing the MAF sensor is often the fix.
75% fixed by replacing the MAF sensor
Honda Accord
2003-2024Similar to Toyota, the IAT sensor is frequently part of the MAF sensor assembly on Honda Accords. Check for wiring damage to the MAF connector first.
70% fixed by replacing the MAF sensor
Ford F-150
2004-2024For many F-150 trucks, the IAT sensor is integrated with the MAF sensor. Ensure the MAF sensor housing and wiring are clean and undamaged before replacement.
70% fixed by replacing the MAF sensor
Frequently Asked Questions
What does P0113 mean?
P0113 indicates that the engine's computer is receiving a voltage signal from the Intake Air Temperature (IAT) sensor that is too high. This high voltage suggests an extremely cold air temperature, which is often an implausible reading.
Can I drive with P0113?
Yes, you can drive with P0113. The vehicle will likely run rich, causing reduced fuel economy and potentially rough idling. Fix this within 1-2 weeks to prevent long-term issues and improve performance.
Will P0113 clear itself?
No, P0113 will not clear itself. The underlying issue, whether a faulty sensor or wiring problem, must be repaired. Once the repair is complete, the code can be cleared with an OBD-II scanner, or it will clear after several drive cycles if the fault is no longer present.
How do I fix P0113 myself?
Start by inspecting the IAT sensor and its connector for damage. If the sensor is easily accessible, you can test its resistance with a multimeter. If it's faulty, replace the IAT sensor. If the IAT sensor is integrated into the Mass Air Flow (MAF) sensor, you will need to replace the entire MAF sensor.
How much does it cost to fix P0113?
DIY repair costs range from $15-$150 for a new IAT sensor (or MAF sensor if integrated). Professional repair costs typically range from $100-$300, covering parts and labor.
P0113 keeps coming back - why?
If P0113 keeps returning, it indicates the initial repair did not address the root cause. Common reasons include: a faulty replacement sensor, overlooked wiring damage, a corroded connector, or, in rare cases, an issue with the engine computer itself.
Will P0113 fail emissions/smog test?
Yes, P0113 will cause your vehicle to fail an emissions or smog test. The Check Engine Light being on is an automatic failure, and the incorrect air temperature readings will affect fuel mixture, leading to higher emissions.
What's the difference between P0113 and P0112?
P0113 indicates an Intake Air Temperature (IAT) sensor circuit high input, meaning the engine computer sees a voltage signal that is too high (suggesting extremely cold air). P0112 indicates an IAT sensor circuit low input, meaning the voltage signal is too low (suggesting extremely hot air).
P0113 on Ford F-150?
On many Ford F-150 models, the IAT sensor is integrated into the Mass Air Flow (MAF) sensor. If you get P0113 on an F-150, you will likely need to replace the entire MAF sensor assembly, not just a standalone IAT sensor.
Questions to Ask Your Mechanic
Did you test the IAT sensor's resistance or voltage output at different temperatures?
Good answer: Yes, I checked the sensor's live data with the scan tool and confirmed it's reading an implausible temperature, or I tested its resistance with a multimeter and it's out of spec.
Did you inspect the wiring harness and connector for the IAT sensor for any damage or corrosion?
Good answer: Yes, I performed a visual inspection and also checked for continuity and proper voltage at the connector pins to rule out wiring issues.
Repair Cost Estimate
DIY Repair
Parts only
$15-$150
Shop Repair
Parts + labor
$100-$300
Save $85-$150 by doing it yourself
Difficulty
beginner
Time
0.5-1 hours
Beginner-friendly - Replacing an IAT sensor is typically a simple bolt-on or clip-in job that requires basic hand tools and minimal mechanical experience.
Cost of Waiting
Ignoring P0113 causes your engine to run rich, leading to poor fuel economy and increased emissions. Prolonged rich conditions can damage your catalytic converter, turning a $15-$150 sensor replacement into a $800-$2,500 catalytic converter repair.
While You're In There...
The IAT sensor is often located near the air filter or integrated into the MAF sensor. Replacing a dirty air filter ensures proper airflow and prevents future MAF/IAT issues.
If your IAT sensor is integrated into the MAF sensor, cleaning the MAF sensor can sometimes resolve the issue, and it's a good maintenance practice.
Tools You'll Need
- OBD-II scanner
- Basic hand tools (screwdrivers, sockets)
- Multimeter (for diagnosis)
- MAF sensor cleaner (if IAT is integrated with MAF)
P0113 is a common sensor code that is usually straightforward to diagnose and fix. Most repairs involve replacing an inexpensive sensor, and your engine will return to normal fuel economy and performance afterward.
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Your Next Steps
Step 1: Inspect the IAT sensor's wiring and connector for any visible damage or corrosion. Ensure the connection is secure.
Step 2: If the wiring looks good, use an OBD-II scanner to check live data for the IAT sensor reading. If it shows an extremely low temperature (e.g., -40°F/-40°C), the sensor is likely faulty.
Step 3: Parts you'll likely need: A new Intake Air Temperature (IAT) sensor. If your vehicle integrates the IAT sensor into the Mass Air Flow (MAF) sensor, you will need a new MAF sensor.