Quick Diagnosis Guide
Meaning: Code P0113 indicates that the vehicle's onboard computer (ECU) has registered a fault in the powertrain (p) circuits.
Can I still drive? Yes, but the ECU will fall back to a default air temperature baseline, which can cause slightly rough starting, reduced engine efficiency, and poorer performance in hot or cold weather.
What does the P0113 code mean?
Diagnostic Trouble Code (DTC) P0113 stands for Intake Air Temperature Sensor 1 Circuit High Input. This is a generic OBD-II trouble code indicating that the ECU has detected system performance parameters that fall outside normal calibrated tolerances.
When this code is logged, the ECU illuminates the dashboard check engine light and triggers a freeze frame record of engine sensor values to help diagnose the issue.
Common Symptoms of Code P0113
Depending on the vehicle make and driving conditions, you may observe the following symptoms:
- Check Engine Light illuminated
- Slightly rough cold starts
- Poor engine response and reduced fuel economy
What causes the P0113 fault code?
Root causes for a P0113 code typically include:
- Potential Cause 1: Faulty Intake Air Temperature (IAT) sensor
- Potential Cause 2: Disconnected or corroded IAT sensor plug
- Potential Cause 3: Damaged wiring harness between IAT and ECU
- Potential Cause 4: Dirty air filter causing restricted flow (rarely triggers Circuit High)
Repair Database Status
No verified vehicle-specific workshop fix is currently logged in our mobile mechanic database for this code. Refer to the diagnostic checklist below to isolate the fault.
Step-by-Step Diagnostic & Inspection Checklist
To inspect and troubleshoot a P0113 code, mechanics follow these validation steps:
- Step 1: Use OBDAssistant to read live IAT data. If it reads a constant cold value (like -40°F), there is an open circuit.
- Step 2: Check if the IAT connector is plugged in securely.
- Step 3: Inspect the IAT sensor wiring for breaks, pinches, or rub marks.
Estimated Repair Cost Band
$30 - $120. The IAT sensor is often built into the MAF sensor, making replacement a simple plug-and-play process.
Note: Repair estimates vary based on vehicle make, model, local labor rates, and whether you require a full parts replacement.
Related Trouble Codes
If your scan tool registers other codes, check out these related guides:
Frequently Asked Questions
It means the ECU is detecting a voltage return signal higher than normal, which indicates a break in the wire (open circuit).
It is typically located in the air intake duct or integrated directly inside the Mass Air Flow (MAF) sensor assembly.